Porsche

Door mirror glass Aspherical, Dimmable, Left for LHD (Left-Hand Drive) cars
The Genuine Porsche 992857521D left door mirror glass is an OE aspherical, dimmable mirror glass for selected Porsche 992, 992 Dakar and 9J1 Taycan models without Lane Change Assist. It restores clear side and rearward visibility, supports factory auto-dimming where fitted and provides correct Porsche fit and finish for the left exterior mirror assembly.

Fits:
for cars WITHOUT Lane change assist (option code: 7Y0)
Porsche 992.1 Carrera 2019 - 2024
Porsche 992.1 Turbo 2020 - 2025
Porsche 992.1 GT3/RS/ST 2021 -2025
Porsche 992 DAKAR  2023 - 2024
Porsche 992.2 Carrera 2024 >>
Porsche 992.2 Turbo 2026 >>
Porsche 992.2 GT3 2025 >>
Porsche 9J1 Taycan 2020 - 2024
Porsche 9J1.2 Taycan 2024 >>

LEFT Door Mirror Glass ASPHERICAL: OE Part No 992857521D
  5SL / 4L6 / L0L

CODES:
   PR:5SL = Door mirror, Left, ASPHERICAL
   PR:4L6 = Breakaway interior rearview mirror, auto-dimming
   PR:L0L = Left-Hand drive

The aspherical mirror glass design provides a wider field of view than standard flat glass, helping improve visibility along the side of the vehicle and reduce blind-spot areas when correctly adjusted.

Functions
• Restores the left-hand exterior mirror glass
• Provides a wider side and rearward field of view through aspherical glass
• Helps reduce blind-spot areas when properly adjusted
• Supports the factory dimming / auto-dimming mirror function where fitted
• Helps reduce glare from following traffic at night
• Fits into the original Porsche exterior mirror housing
• Maintains factory exterior mirror appearance and function
• Replaces cracked, scratched, cloudy, stained or failed mirror glass
 Provides correct OE Porsche fitment, finish and quality.

Why Replace This Part?
Door mirror glass can become cracked, scratched, cloudy or damaged from impact, road debris, weather exposure or cleaning wear. Dimmable mirror glass can also fail internally, causing dark patches, staining, liquid marks or reduced visibility. Replacing damaged or failed glass with a Genuine Porsche OE aspherical dimmable mirror glass restores clear visibility, correct mirror function and the original Porsche exterior mirror appearance. It is important to choose the correct version for cars without Lane Change Assist, as mirror glass variants differ depending on vehicle equipment.

When to Replace This Part
•  If the left mirror glass is cracked or broken
•  If the glass is scratched, cloudy or discoloured
•  If the auto-dimming function has failed
•  If the mirror has dark patches, staining or liquid marks
•  If visibility through the mirror is poor
•  After impact damage to the exterior mirror
•  During door mirror housing repair or replacement
•  When replacing incorrect mirror glass on a car without Lane Change Assist
•  When restoring the vehicle with correct OE Porsche parts.

Where It Fits on the Car
This mirror glass fits in the left-hand exterior door mirror assembly. It installs into the mirror carrier inside the exterior door mirror housing and connects to the relevant dimming/heating terminals where fitted. This version is intended for vehicles without Lane Change Assist, so it does not include the Lane Change Assist indicator specification.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

992857521D

The product you are viewing cross references to these numbers

Door mirror glass Convex, Right for LHD (Left-Hand Drive) cars
This Genuine Porsche right door mirror glass is an OE convex mirror glass for left-hand-drive Porsche 9YA Cayenne 2018 onwards and 95C Macan Electric 2024 onwards models without Lane Change Assist. It restores clear passenger-side visibility, maintains the factory exterior mirror appearance and provides correct Porsche fit and finish.

Fits:
for cars WITHOUT Lane change assist (option code: 7Y0)
Porsche 9YA Cayenne 2018 - 2024
Porsche 9YA.2 Cayenne 2023>>
Porsche 95C Macan-E 2024>>

RIGHT Door Mirror Glass CONVEX: OE Part No 9Y1857522
   L0L / 5RQ / 6XT / 6XW

CODES:
   PR:L0L = Left-hand drive version
   PR:5RQ = Exterior mirror, Right, CONVEX
   PR:6XP = Door mirrors, electrically retractable, electrically adjustable, separately heated
   PR:6XQ = Door mirrors, with memory functions, electrically retractable, electrically adjustable, separately heated


The convex mirror glass provides a wider field of view than flat mirror glass, helping improve visibility along the passenger side of the vehicle.

Functions
• Restores the right-hand exterior mirror glass
• Provides a wider side and rearward view through convex glass
• Helps improve visibility when changing lanes, overtaking, parking and manoeuvring
• Fits into the original Porsche right door mirror housing
• Maintains factory exterior mirror appearance and function
• Replaces cracked, scratched, cloudy or damaged mirror glass
• Provides correct OE Porsche fitment, finish and quality.

Why Replace This Part?
Door mirror glass can become cracked, scratched, cloudy or damaged from impact, road debris, cleaning wear or weather exposure. Poor visibility through the mirror can affect driver confidence and road safety, especially when checking traffic on the passenger side or changing lanes. Replacing damaged mirror glass with a Genuine Porsche OE convex mirror glass restores clear visibility, correct factory appearance and original Porsche fitment. It is important to use the correct version for vehicles without Lane Change Assist, as mirror glass variants differ depending on vehicle equipment.

When to Replace This Part
•   If the right mirror glass is cracked or broken
•   If the glass is scratched, cloudy or discoloured
•   If visibility through the mirror is poor
•   After impact damage to the exterior mirror
•   During door mirror housing repair or replacement
•   When replacing incorrect mirror glass on a car without Lane Change Assist
•   When restoring the vehicle with correct OE Porsche parts.

Where It Fits on the Car
This mirror glass fits in the right-hand exterior door mirror assembly. For left-hand-drive vehicles, this is normally the passenger-side mirror. It installs into the mirror carrier inside the door mirror housing and replaces the original mirror glass only.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

9Y1857522

The product you are viewing cross references to these numbers

Door mirror glass Flat, Left for LHD (Left-Hand Drive) cars
Genuine Porsche OE left-hand door mirror glass, flat type, for left-hand-drive Porsche 9YA Cayenne 2018 onwards and 95C Macan Electric 2024 onwards models without Lane Change Assist. This original Porsche replacement mirror glass is designed for the left exterior door mirror and is suitable for vehicles with LY0 option code / without Lane Change Assist.

Fits:
for cars WITHOUT Lane change assist (option code: 7Y0)
Porsche 9YA Cayenne 2018 - 2024
Porsche 9YA.2 Cayenne 2023>>
Porsche 95C Macan-E 2024>>

LEFT Door Mirror Glass FLAT: OE Part No 9Y1857521
   L0L / 5RQ / 6XT / 6XW

CODES:
   PR:L0L = Left-hand drive version
   PR:5SG = Door mirror, Left, FLAT
   PR:6XP = Door mirrors, electrically retractable, electrically adjustable, separately heated
   PR:6XQ = Door mirrors, with memory functions, electrically retractable, electrically adjustable, separately heated


This mirror glass replaces the original glass only and fits into the factory Porsche exterior mirror housing.

Functions
• Restores the left-hand exterior mirror glass
• Provides a clear rearward and side view
• Maintains the original flat mirror view for the left side on LHD vehicles
• Fits into the original Porsche left door mirror housing
• Supports safe driving, lane changes, parking and manoeuvring
• Maintains factory exterior mirror appearance and fitment
• Replaces cracked, scratched, cloudy or damaged mirror glass
• Provides correct OE Porsche quality and finish.

Why Replace This Part?
Door mirror glass can become cracked, scratched, cloudy or damaged from impact, road debris, cleaning wear or weather exposure. Poor mirror visibility can affect safety and driver confidence, especially when changing lanes, parking or checking surrounding traffic. Replacing damaged mirror glass with a Genuine Porsche OE flat mirror glass restores clear visibility, correct Porsche fitment and the original exterior mirror appearance. It is important to use the correct version for cars without Lane Change Assist / LY0, as mirror glass variants differ depending on vehicle equipment.

When to Replace This Part
•  If the left mirror glass is cracked or broken
•  If the glass is scratched, cloudy or discoloured
•  If visibility through the mirror is poor
•  After impact damage to the exterior mirror
•  During door mirror housing repair or replacement
•  When replacing incorrect mirror glass on a car without Lane Change Assist
•  When restoring the vehicle with correct OE Porsche parts.

Where It Fits on the Car
This mirror glass fits in the left-hand exterior door mirror assembly. For left-hand-drive vehicles, this is normally the driver-side mirror. It installs into the mirror carrier inside the door mirror housing and replaces the original mirror glass only.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

9Y1857521

The product you are viewing cross references to these numbers

Door mirror glass Convex, Right for LHD (Left-Hand Drive) cars
The Genuine Porsche 9Y1857522P right door mirror glass is an OE convex mirror glass for left-hand-drive Porsche 9YA Cayenne 2018 onwards and 95C Macan Electric 2024 onwards models with Lane Change Assist / LY1 option code. It restores clear passenger-side visibility, supports the correct Lane Change Assist mirror specification and provides factory Porsche fit and finish.

Fits:
for cars WITH Lane change assist (option code: 7Y1)
Porsche 9YA Cayenne 2018 - 2024
Porsche 9YA.2 Cayenne 2023>>
Porsche 95C Macan-E 2024>>

RIGHT Door Mirror Glass CONVEX: OE Part No 9Y1857522P
   L0L / 5RQ / 6XT / 6XW

CODES:
   PR:L0L = Left-hand drive version
   PR:5RQ = Door mirror, Right, CONVEX (AGCC)
   PR:6XP = Door mirrors, electrically retractable, electrically adjustable, separately heated
   PR:6XQ =   Door mirrors, with memory functions, electrically retractable, electrically adjustable, separately heated


The convex mirror glass provides a wider field of view than flat mirror glass, helping improve visibility along the passenger side of the vehicle.

Functions
•  Restores the right-hand exterior mirror glass
•  Provides a wider side and rearward view through convex glass
•  Helps improve visibility when changing lanes, overtaking, parking and manoeuvring
•  Supports the factory Lane Change Assist / side assist warning display where fitted
•  Fits into the original Porsche right door mirror housing
•  Maintains factory exterior mirror appearance and function
•  Replaces cracked, scratched, cloudy or damaged mirror glass
•  Provides correct OE Porsche fitment and quality.

Why Replace This Part?
Door mirror glass can become cracked, scratched, cloudy or damaged from impact, road debris, weather exposure or cleaning wear. If the vehicle is equipped with Lane Change Assist, it is important to use the correct mirror glass version so the side assist indicator remains compatible and visible. Replacing damaged glass with a Genuine Porsche OE convex mirror glass restores clear visibility, correct mirror appearance and factory Porsche fitment.

When to Replace This Part
•   If the right mirror glass is cracked or broken
•   If the glass is scratched, cloudy or discoloured
•   If visibility through the mirror is poor
•   If the Lane Change Assist indicator area is damaged or not clearly visible
•   After impact damage to the exterior mirror
•   During door mirror housing repair or replacement
•   When replacing incorrect mirror glass on a car with LY1 Lane Change Assist
•   When restoring the vehicle with correct OE Porsche parts.

Where It Fits on the Car
This mirror glass fits in the right-hand exterior door mirror assembly. For left-hand-drive vehicles, this is normally the passenger-side mirror. It installs into the mirror carrier inside the door mirror housing and is designed for cars with the correct Lane Change Assist mirror equipment.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

9Y1857522P

The product you are viewing cross references to these numbers

Door mirror glass Convex, Automatically dimmable, Right for LHD (Left-Hand Drive) cars
Genuine Porsche OE right-hand door mirror glass, convex and dimmable, for left-hand-drive Porsche 9YA Cayenne and 95C Macan Electric models without lane change assist. This original Porsche replacement mirror glass is designed for the right exterior door mirror and helps restore clear rearward visibility, factory mirror function and correct OE fitment.

Fits:
for cars WITHOUT Lane change assist (option code: 7Y0)
Porsche 9YA Cayenne 2018 - 2024
Porsche 9YA.2 Cayenne 2023>>
Porsche 95C Macan-E 2024>>

RIGHT Door Mirror Glass CONVEX: OE Part No 9Y1857522T
   L0L / 5RQ / 6XT / 6XW

CODES:
   PR:L0L = Left-hand drive version
   PR:5RQ = Door mirror, Right, CONVEX
   PR:6XT = Door mirror, automatically dimmable, electrically retractable/adjustable, separately heated + memory
   PR:6XW =  Door mirror, automatically dimmable, electrically retractable/adjustable, separately heated


The convex mirror glass design gives a wider field of view than flat mirror glass, helping improve visibility on the passenger side of the vehicle.

Functions
• Restores the right-hand exterior mirror glass
• Provides a wider side and rearward field of view through convex glass
• Helps improve visibility when changing lanes, parking or manoeuvring
•  Supports the factory dimming / auto-dimming mirror function where fitted
•  Helps reduce glare from following traffic at night
•  Supports mirror heating where the vehicle is equipped with heated mirror glass
•  Fits into the factory Porsche exterior mirror housing
•  Maintains original Porsche mirror appearance and functionality
•  Replaces cracked, scratched, cloudy, stained or failed mirror glass

•Provides OE Porsche fit, finish and quality.

Why Replace This Part?
Door mirror glass can become cracked, scratched, cloudy or damaged from road debris, impact, weather exposure or cleaning wear. Dimmable mirror glass can also fail internally, causing dark patches, staining, liquid marks or reduced visibility. Replacing the glass with a Genuine Porsche OE convex dimmable mirror glass restores the correct field of view, factory appearance and original mirror function. It is important to use the correct version for cars without Lane Change Assist, as mirror glass variants differ depending on vehicle option equipment.

When to Replace This Part
•   If the right mirror glass is cracked or broken
•   If the glass is scratched, cloudy or discoloured
•   If the auto-dimming function has failed
•   If the mirror has dark patches, staining or liquid marks
•   If mirror heating is no longer functioning due to glass failure
•   If visibility through the mirror is poor
•   After impact damage to the exterior mirror
•   During mirror housing repair or replacement
•   When replacing incorrect mirror glass fitted to a car without Lane Change Assist
•   When restoring the car with correct Porsche OE parts.

Where It Fits on the Car
This mirror glass fits in the right-hand exterior door mirror assembly. For left-hand-drive vehicles, this is normally the passenger-side mirror. It installs into the mirror carrier inside the door mirror housing and connects to the relevant heating and dimming terminals where fitted.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

9Y1857522T

The product you are viewing cross references to these numbers

Crankcase Through Bolt O-Ring 
Sold each - 24 required per engine

The Porsche Crankcase Through Bolt O-Ring is a small but critically important sealing component used in Porsche 911 engines from 1965 to 1989. Fitted around the crankcase through bolts that secure the engine case halves together, this O-ring helps prevent oil leakage from one of the most common sealing points found on classic air-cooled Porsche engines.

Fits:

• Porsche 911 1965-1968 2.0L / 912 SWB (F)
• Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
• Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
• Porsche 911 1978-1983 3.0L / SC
• Porsche 911 1984-1986 3.2L
• Porsche 911 1987-1989 3.2L G50
• Porsche 911 1975-1977 3.0L Turbo (930)
• Porsche 911 1978-1989 3.3L Turbo (930)

Diagram ref no 22

Although inexpensive, these O-rings play a vital role in maintaining the integrity of the engine lubrication system. When properly installed, they create a reliable seal around the through bolts, preventing pressurised engine oil from escaping the crankcase and helping to keep the engine clean and leak-free.

Whether you're performing a complete engine rebuild, repairing oil leaks, or restoring a classic Porsche 911, replacing the crankcase through bolt O-rings is considered essential preventative maintenance.

What Does the Crankcase Through Bolt O-Ring Do?

The through bolt O-ring seals the openings where the crankcase through bolts pass through the engine case.

Its primary functions include:

• Preventing oil leaks from the crankcase
• Maintaining crankcase sealing integrity
• Supporting proper oil system operation
• Helping preserve engine cleanliness
• Reducing oil loss and contamination
• Protecting engine components from oil seepage

Because Porsche air-cooled engines operate with a high-capacity dry-sump lubrication system, maintaining effective sealing throughout the crankcase is crucial for long-term reliability.

Why Does the Through Bolt O-Ring Fail?

Over time, the O-ring is exposed to extreme engine heat, oil, pressure fluctuations, and age-related deterioration.

Common causes of failure include:

• Rubber hardening due to heat cycles
• Age-related shrinkage
• Loss of elasticity
• Oil exposure over decades of use
• Improper installation
• Damage during assembly
• Long-term storage and inactivity

As the O-rings age, they gradually lose their sealing ability and become one of the most common sources of oil leaks on classic Porsche 911 engines.

Common Symptoms of a Failing Through Bolt O-Ring

Signs that the O-rings may require replacement include:

• Oil leaks around the crankcase
• Oil residue underneath the engine
• Persistent oil drips despite replacing other seals
• Oil staining around through bolt locations
• Excessive oil mist accumulation on the engine case
• Leaks becoming worse as the engine reaches operating temperature

These leaks are often mistaken for rocker cover, timing chain housing, or crankshaft seal leaks due to the way oil travels across the engine casing.

When Should You Replace It?

Replacement is strongly recommended whenever the engine is disassembled.

The through bolt O-rings should always be replaced:

• During complete engine rebuilds
• During crankcase splitting procedures
• When repairing major oil leaks
• During full engine restorations
• On high-mileage engines undergoing overhaul
• Whenever the crankcase through bolts are removed
• As preventative maintenance during engine refurbishment

Because access requires significant engine disassembly, replacing these O-rings during rebuild work is considered standard Porsche engine-building practice.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99970100640

The product you are viewing cross references to these numbers

Window Regulator, Front Right.
The Front Right Window Regulator is a genuine component designed to restore smooth and reliable operation of the front right electric window. As a key part of the power window system, the regulator controls the movement of the window glass, converting the electric motor's rotational movement into the precise up-and-down motion required for opening and closing the window.

Fits:

• Porsche 958 Cayenne V6 3.6L Petrol (300Hp) 2010-17
• Porsche 958 Cayenne V6 3.0L Diesel (245Hp) 2010-17
• Porsche 958 Cayenne S V6 3.0L Hybrid (380Hp) 2010-17
• Porsche 958 Cayenne S V8 4.8L Petrol (400Hp) 2010-17
• Porsche 958 Cayenne S V8 4.2L Diesel (382Hp) 2010-17
• Porsche 958 Cayenne GTS V8 4.8L Petrol (400Hp) 2010-17
• Porsche 958 Cayenne Turbo V8 4.8L Petrol (500Hp) 2010-17
• Porsche 958 Cayenne Turbo S V8 4.8L Petrol (550Hp) 2010-17

Cars With Option Codes:
9VJ - Top Premium Sound System
9VK - Sound Package 1
9VL - Sound Package 2 / High-End Sound System
  
Diagram Ref No 1

Manufactured to OE specifications for fit, function and durability, this replacement window regulator provides dependable performance and correct alignment of the window glass. It is an ideal solution for replacing worn, damaged or failed original regulators and restoring proper window operation. 

What This Product Does: 

• Controls the raising and lowering of the front right window glass.
• Transfers movement from the window motor to the window mechanism.
• Maintains smooth and controlled window operation.
• Supports correct alignment of the window glass within the door frame.
• Helps ensure proper sealing against weather, wind and noise.
• Restores reliable functionality of the vehicle's power window system.

Symptoms Of Wear Or Failure:

• Window moves slowly, unevenly or becomes stuck.
• Grinding, clicking or popping noises from inside the door.
• Window drops into the door unexpectedly.
• Window tilts or becomes misaligned during operation.
• Window stops moving despite the motor operating.
• Intermittent window operation.
• Excessive play in the window mechanism.
• Difficulty fully opening or closing the window.

Why Replacement Matters:

• Window regulators are subjected to constant use, vibration, temperature fluctuations and mechanical stress. Over time, cables, pulleys, guide rails and moving components can wear, stretch or break, leading to poor window operation or complete failure.
• A damaged window regulator can leave the vehicle vulnerable to water ingress, increased wind noise, security concerns and inconvenience. In some cases, a failed regulator may cause the window glass to become unsupported, potentially resulting in damage to the glass or door components.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

958837462

The product you are viewing cross references to these numbers

Door mirror glass Aspherical, Automatically dimmable, Left for LHD (Left-Hand Drive) cars
This Genuine Porsche left door mirror glass is an OE aspherical, dimmable mirror glass for left-hand-drive Porsche 9YA Cayenne and 95C Macan-e models with lane change assist. It restores clear side and rearward visibility, supports factory auto-dimming, heating and lane change assist functions where fitted, and provides the correct Porsche fit and finish for the left exterior mirror assembly.

Fits:
for cars with option code: 7Y1 - Lane change assist
Porsche 9YA Cayenne 2018 - 2024
Porsche 9YA.2 Cayenne 2023>>
Porsche 95C Macan-E 2024>>

LEFT Door Mirror Glass ASPHERICAL: OE Part No 9Y1857521Q
   L0L / 5SL / 6XT / 6XW

CODES:
   PR:L0L = Left-hand drive version
   PR:5SL = Door mirror, Left, ASPHERICAL
   PR:6XT = Door mirror, automatically dimmable, electrically retractable/adjustable, separately heated + memory
   PR:6XW =  Door mirror, automatically dimmable, electrically retractable/adjustable, separately heated


The aspherical glass design provides a wider field of view than standard flat mirror glass, helping improve visibility along the driver side of the vehicle.

Functions
•  Restores the left-hand exterior mirror glass
•  Provides a wider side and rearward field of view through aspherical glass
•  Helps reduce blind-spot areas when correctly adjusted
•  Supports the factory lane change assist / side assist display where fitted
•  Supports the factory dimming / auto-dimming mirror function where fitted
•  Helps reduce glare from following traffic at night
•  Supports mirror heating where the vehicle is equipped with heated mirror glass
•  Fits into the factory Porsche exterior mirror housing
•  Maintains original Porsche mirror appearance and functionality
•  Replaces cracked, scratched, cloudy, stained or failed mirror glass
•  Provides OE Porsche fit, finish and quality.

Why Replace This Part?
Door mirror glass can become cracked, scratched, cloudy or damaged from impact, road debris, weather exposure or cleaning wear. Dimmable mirror glass can also fail internally, causing dark patches, stains, liquid marks or reduced visibility. If the mirror glass includes lane change assist functionality, damage or incorrect replacement glass may also affect the visibility of the side assist warning indicator. Replacing the glass with a Genuine Porsche OE aspherical dimmable mirror glass helps restore the correct field of view, factory appearance and original mirror functions, including lane change assist compatibility where fitted.

When to Replace This Part
•   If the left mirror glass is cracked or broken
•   If the glass is scratched, cloudy or discoloured
•   If the auto-dimming function has failed
•   If the mirror has dark patches, staining or liquid marks
•   If the lane change assist indicator area is damaged or no longer visible
•   If mirror heating is no longer functioning due to glass failure
•   If visibility through the mirror is poor
•   After impact damage to the exterior mirror
•   During mirror housing repair or replacement
•   When restoring the car with correct Porsche OE parts.

Where It Fits on the Car
This mirror glass fits in the left-hand exterior door mirror assembly. For left-hand-drive vehicles, this is normally the driver-side mirror. It installs into the mirror carrier inside the door mirror housing and connects to the relevant heating, dimming and lane change assist connections where fitted.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

9Y1857521Q

The product you are viewing cross references to these numbers

Oil Pressure Sender Unit

The Oil Pressure Sender Unit is a critical engine monitoring component fitted to the Porsche 911 SC from 1978 to 1983. Designed to continuously monitor engine oil pressure and transmit accurate readings to the dashboard gauge, this sender unit allows drivers to keep track of one of the most important indicators of engine health.

Fits:

• Porsche 911 1978-1983 3.0L / SC       

Diagram ref no 45

On air-cooled Porsche engines, maintaining correct oil pressure is essential for lubrication, cooling, and long-term engine protection. The oil pressure sender unit converts oil pressure into an electrical signal that is displayed on the instrument cluster, providing real-time feedback on the condition of the lubrication system.

A faulty sender unit can result in inaccurate readings, fluctuating gauge behaviour, or complete loss of oil pressure indication, making replacement an important part of preventative maintenance and engine reliability.

What Does the Oil Pressure Sender Unit Do?

The oil pressure sender measures the pressure generated within the engine's lubrication system and sends a corresponding electrical signal to the oil pressure gauge.

This enables the driver to:

• Monitor engine oil pressure in real time
• Identify lubrication issues before serious damage occurs
• Detect low oil pressure conditions
• Verify correct oil circulation throughout the engine
• Monitor engine health during normal driving and performance use

Because the Porsche 911 SC uses an air-cooled engine with a sophisticated dry-sump lubrication system, accurate oil pressure readings are particularly important for protecting valuable engine components.

Why Does the Oil Pressure Sender Unit Fail?

Oil pressure sender units operate in a harsh environment exposed to heat, vibration, oil contamination, and age-related deterioration.

Common causes of failure include:

• Internal electrical wear
• Diaphragm deterioration
• Oil contamination inside the sender
• Corrosion of electrical terminals
• Heat-related degradation
• Vibration damage Internal sealing failure causing oil leaks
• Age-related sensor inaccuracy

As the sender ages, readings may become erratic, inaccurate, or completely non-functional.

Common Symptoms of a Faulty Oil Pressure Sender

A failing oil pressure sender unit may cause:

• Oil pressure gauge fluctuating unexpectedly
• Incorrect oil pressure readings
• Gauge reading permanently high or low
• Intermittent gauge operation
• No oil pressure indication at all
• Oil leakage from the sender body
• Dashboard oil pressure concerns despite normal engine operation

In many cases, the sender unit itself is the source of the problem rather than the engine's oil pressure system.

When Should You Replace It?

Replacement is recommended when:

• Oil pressure readings become unreliable
• The gauge behaves erratically
• The sender develops an oil leak
• During engine restoration work
• When replacing ageing engine sensors
• As part of preventative maintenance on high-mileage vehicles
• During diagnosis of oil pressure-related dashboard faults

Replacing a faulty sender restores confidence in your oil pressure monitoring system and helps ensure that genuine lubrication issues can be identified quickly.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

91160611103

The product you are viewing cross references to these numbers

Adapter for glovebox damper
This original Porsche adapter is used with the glove box / compartment damper assembly, helping connect and support the damper for smooth glove box operation.
Sold individually

Fits:
Porsche 986 Boxster 2003 - 2004
Porsche 996 Carrera 2002 - 2005
Porsche 987.1 Boxster 2005 - 2008
Porsche 987.2 Boxster 2009 - 2012
Porsche 987C.1 Cayman 2005 - 2008
Porsche 987C.2 Cayman 2009 - 2012
Porsche 997.1 Carrera 2005 - 2008
Porsche 997.2 Carrera 2009 - 2012
Porsche 997 Turbo 2007 - 2013
Porsche 997 GT3 2007 - 2011

Diagram ref no 21

Part number 99655287900 is a Genuine Porsche box damper adapter, also referred to as a glove box damper adapter, adapter for damper, glove box bracket or glove box clip. It is part of the interior glove compartment assembly and is used with the damper that controls the opening movement of the glove box lid.

Functions
•  Connects the glove box damper to the glove compartment assembly
•  Helps support smooth, controlled glove box lid movement
•  Provides the correct mounting/adaptor point for the damper
•  Helps prevent the glove box lid from dropping open too quickly
•  Supports correct operation of the glove box damper mechanism
•  Helps maintain factory Porsche interior fit and function
•  Replaces a broken, missing or damaged damper adapter/clip.

The glove box damper adapter is a small plastic/interior fixing component that can break, wear or become lost during glove box removal or interior repairs. If the adapter is damaged or missing, the damper may not attach correctly, causing the glove box lid to drop open without resistance or operate incorrectly. Replacing it with a Genuine Porsche OE adapter helps restore the correct damper connection and smooth glove compartment operation.

When to Replace This Part
•  If the glove box damper is detached or not working correctly
•  If the adapter/clip is broken, cracked or missing
•  If the glove box lid drops open too quickly
•  During glove box damper replacement
•  During glove compartment, dashboard or trim repair
•  When refitting the glove box after interior work
•  When restoring the interior with correct OE Porsche hardware.

Where It Fits on the Car
This adapter fits in the interior dashboard/glove compartment area. It is used on the glove box / glove compartment damper assembly, providing the connection point between the damper and the glove box lid or surrounding trim.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99655287900

The product you are viewing cross references to these numbers

Rear Window Wiper Blade.

The Rear Window Wiper Blade is a high-quality replacement rear wiper blade designed to provide clear visibility through the rear window in wet, snowy, and dirty driving conditions. Engineered to OEM specifications, the blade ensures smooth, consistent contact with the rear glass, effectively removing water, road spray, dirt, and debris for improved rearward visibility and driving safety.

Fits:

• Porsche 9J1.1 Taycan 2020-24
• Porsche 9J1.1 Taycan Sport Turismo 2020-24
• Porsche 9J1.1 Taycan 4 Cross Turismo 2020-24
• Porsche 9J1.1 Taycan 4S 2020-24
• Porsche 9J1.1 Taycan 4S Cross Turismo 2020-24
• Porsche 9J1.1 Taycan 4S Sport Turismo 2020-24
• Porsche 9J1.1 Taycan GTS 2020-24
• Porsche 9J1.1 Taycan GTS Sport Turismo 2020-24
• Porsche 9J1.1 Taycan Turbo 2020-24
• Porsche 9J1.1 Taycan Turbo Cross Turismo 2020-24
• Porsche 9J1.1 Taycan Turbo Sport Turismo 2020-24
• Porsche 9J1.1 Taycan Turbo S 2020-24
• Porsche 9J1.1 Taycan Turbo S Cross Turismo 2020-24
• Porsche 9J1.1 Taycan Turbo S Sport Turismo 2020-24
• Porsche 9J1.2 Taycan Sport Saloon 2024>>
• Porsche 9J1.2 Taycan Sport Turismo 2024>>
• Porsche 9J1.2 Taycan 4 Cross Turismo 2024>>
• Porsche 9J1.2 Taycan 4S Sport Saloon 2024>>
• Porsche 9J1.2 Taycan 4S Sport Turismo 2024>>
• Porsche 9J1.2 Taycan 4S Cross Turismo 2024>>
• Porsche 9J1.2 Taycan Turbo GT Sport Saloon 2024>>
• Porsche 9J1.2 Taycan Turbo GT with Weissach Package Sport Saloon 2024>>
• Porsche 9J1.2 Taycan Turbo Sport Saloon 2024>>
• Porsche 9J1.2 Taycan Turbo Sport Turismo 2024>>
• Porsche 9J1.2 Taycan Turbo Cross Turismo 2024>>
• Porsche 9J1.2 Taycan Turbo S Sport Saloon 2024>>
• Porsche 9J1.2 Taycan Turbo S Sport Turismo 2024>>
• Porsche 9J1.2 Taycan Turbo S Cross Turismo 2024>> 

 
Diagram Ref No 4

Manufactured from durable rubber compounds and robust frame materials, this rear wiper blade is designed to withstand exposure to UV light, temperature changes, and harsh weather conditions while maintaining optimum wiping performance and long service life.

What This Product Does:

• Clears water, dirt, and debris from the rear window
• Maintains clear rearward visibility in adverse weather conditions
• Provides smooth and consistent wiping performance
• Improves driving safety during rain, snow, and road spray conditions
• Reduces streaking and smearing on the rear glass
• Helps maintain visibility when reversing or manoeuvring

Symptoms Of Wear Or Failure:

• Streaking or smearing across the rear window
• Missed areas or incomplete wiping coverage
• Squeaking, chattering, or noisy operation
• Cracked, split, or hardened rubber blade edge
• Poor water removal performance
• Reduced visibility during wet weather
• Blade lifting away from the glass surface
• Visible wear or deterioration of the wiping element

Why Replacement Matters:

• Restores clear rear-window visibility in all weather conditions
• Improves safety when reversing and manoeuvring
• Ensures effective removal of rain, dirt, and road spray
• Reduces streaking and smearing on the glass
• Prevents potential scratching caused by damaged blade material
• Maintains smooth and quiet wiper operation
• Supports overall vehicle safety and driver awareness
• Provides reliable performance throughout the year

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9J0955427

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Ignition Coil.

The Ignition Coil is a high-quality ignition system component designed to convert the vehicle's low-voltage battery power into the high-voltage electrical energy required to fire the spark plugs. Working in conjunction with the engine control unit (ECU), the ignition coil delivers precise spark energy to ensure efficient combustion, smooth engine operation, and optimum performance.
Sold Each.
x6 Required Per Car.

Fits:

• Porsche Boxster Spyder / Spyder RS 718 4.0L 01/2019>>
• Porsche 992.1 GT3 4.0L / 992 S/T 4.0L 2021-24
• Porsche 992.1 GT3 RS 4.0L 2022-24
• Porsche 992.2 GT3 2025>>
• Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L

  
Diagram Ref No 17

Manufactured to OEM specifications, this ignition coil provides reliable spark generation, consistent ignition timing, and long service life under demanding operating conditions. As a critical component of the ignition system, it plays a key role in maintaining engine efficiency, fuel economy, power delivery, and emissions control.

What This Product Does:

• Converts low battery voltage into high-voltage ignition energy
• Supplies electrical current to the spark plugs
• Ensures reliable ignition of the air-fuel mixture
• Supports smooth engine operation and performance
• Helps optimise fuel efficiency and combustion quality
• Contributes to reduced emissions and improved drivability

Symptoms Of Wear Or Failure:

• Engine misfires
• Rough idle or uneven engine running
• Loss of power and poor acceleration
• Poor fuel economy Hard starting or extended cranking
• Engine hesitation under load
• Check engine light illumination
• Ignition system or misfire-related fault codes stored in the ECU

Why Replacement Matters:

• Restores strong and consistent spark delivery
• Eliminates misfires and rough engine operation
• Improves fuel economy and combustion efficiency
• Enhances throttle response and power output
• Reduces harmful exhaust emissions
• Helps prevent catalytic converter damage caused by unburnt fuel
• Maintains reliable engine starting and smooth operation
• Ensures optimum ignition system performance and ECU communication

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0PB905093G

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Cross Over Pipe Exhaust Sealing Ring Washer 

Restore secure exhaust sealing with Cross Over Pipe Exhaust Sealing Ring Washer, designed for Porsche 911 models produced from 1975 to 1989. This sealing washer is used on the cross over pipe section of the exhaust system, helping create a tight, reliable seal between exhaust components.

Fits:

• Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
• Porsche 911 1978-1983 3.0L / SC
• Porsche 911 1984-1986 3.2L
• Porsche 911 1987-1989 3.2L G50
• Porsche 911 1975-1977 3.0L Turbo (930)
• Porsche 911 1978-1989 3.3L Turbo (930)

Diagram ref no 12 

The cross over pipe is exposed to high temperatures, vibration and exhaust gas pressure. The sealing ring washer helps maintain correct joint compression, reducing the risk of exhaust leaks, rattles and poor system alignment. When worn or damaged, the washer may no longer seal effectively, allowing exhaust gases to escape.

Replacing this washer during exhaust repairs, cross over pipe removal or restoration work helps ensure a professional, leak-free installation.

What Does an Exhaust Sealing Ring Washer Do?

An exhaust sealing ring washer supports the sealing joint between exhaust components. It helps maintain clamping pressure and assists the sealing ring or joint in preventing exhaust gases from escaping.

A correctly fitted sealing washer helps provide:

• Secure exhaust joint sealing
• Reduced risk of exhaust leaks
• Correct cross over pipe fitment
• Improved exhaust system stability
• Better gasket and sealing ring performance
• Reduced vibration and exhaust noise
• Reliable long-term exhaust operation

Symptoms of Wear or Failure

Common signs that an exhaust sealing washer may need replacement include:

• Exhaust blowing noises
• Soot marks around exhaust joints
• Increased exhaust noise
• Rattling from the cross over pipe area
• Poor sealing after exhaust refitting
• Corrosion or distortion of the washer
• Loose or uneven exhaust joint compression
• Exhaust fumes around the rear of the vehicle

Why Replacement Matters

A worn or damaged sealing washer can compromise the exhaust joint, leading to leaks, vibration and premature wear of surrounding exhaust parts.

Replacement helps:

• Restore correct exhaust sealing
• Prevent exhaust gas leaks
• Improve exhaust system reliability
• Reduce unwanted noise and vibration
• Maintain proper exhaust flow
• Protect connected exhaust components
• Improve repair and restoration quality
• Support long-term durability       

Related reference numbers
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91111118802

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Cross Over Pipe Exhaust Sealing Ring 

Restore proper exhaust sealing and eliminate unwanted exhaust leaks with Cross Over Pipe Exhaust Sealing Ring, designed for Porsche 911 models produced between 1975 and 1989. This sealing ring is used within the cross over pipe section of the exhaust system, creating a gas-tight seal between connected exhaust components.

Fits:

• Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
• Porsche 911 1978-1983 3.0L / SC
• Porsche 911 1984-1986 3.2L
• Porsche 911 1987-1989 3.2L G50
• Porsche 911 1975-1977 3.0L Turbo (930)
• Porsche 911 1978-1989 3.3L Turbo (930)

Diagram ref no 13 

The cross over pipe is a critical part of the air-cooled Porsche exhaust system, helping balance exhaust gas flow and directing gases efficiently through the exhaust assembly. The sealing ring ensures that exhaust gases remain contained within the system, preventing leaks that can reduce performance, increase noise and affect overall driving enjoyment.

Over time, exhaust sealing rings are subjected to extreme temperatures, vibration, pressure fluctuations and corrosion. As the seal ages, it can become compressed, brittle or damaged, leading to exhaust leaks and reduced system efficiency.

Replacing worn sealing rings whenever exhaust components are removed is essential for maintaining proper exhaust system performance and reliability.

What Does a Cross Over Pipe Exhaust Sealing Ring Do?

The exhaust sealing ring sits between mating exhaust components and creates a heat-resistant seal that prevents exhaust gases from escaping.

A properly functioning sealing ring helps:

• Maintain a leak-free exhaust system
• Ensure correct exhaust gas flow
• Reduce exhaust noise
• Support engine efficiency
• Prevent exhaust fumes escaping at joints
• Maintain correct exhaust back pressure
• Protect surrounding components from hot gas leakage

Without an effective seal, exhaust gases can escape before reaching the silencer system.

Symptoms of Wear or Failure

Exhaust sealing rings naturally deteriorate due to constant exposure to heat and vibration.

Common signs of a failing sealing ring include:

• Exhaust blowing noises
• Ticking sounds from the exhaust system
• Visible soot deposits around joints
• Increased exhaust noise
• Exhaust fumes around the vehicle
• Reduced engine efficiency
• Poor sealing after exhaust disassembly
• Signs of compression or deterioration during inspection

Even a small leak can become progressively worse if the sealing ring is not replaced.

Why Replacement Matters

Replacing a worn exhaust sealing ring helps maintain exhaust system integrity and prevents secondary damage to other exhaust components.

Benefits include:

• Restores leak-free exhaust operation
• Improves exhaust system efficiency
• Reduces unwanted exhaust noise
• Helps maintain correct exhaust flow
• Protects surrounding exhaust components
• Improves repair reliability
• Supports long-term durability
• Enhances restoration quality

For classic air-cooled Porsche 911 models, maintaining correct exhaust sealing is essential for performance, reliability and driving enjoyment.

Related reference numbers
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91111118903

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Exhaust Clamp for Cross Over Pipe Clamp Half
Sold each - 2 required per car

Maintain a secure and leak-free exhaust system with Exhaust Clamp, designed for use on the cross over pipe of Porsche 911 models produced between 1975 and 1989. Manufactured from mild steel, this clamp need two matching half sections that bolt together around the exhaust pipe connection, providing the clamping force required to secure and seal the joint.

Fits:

• Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
• Porsche 911 1978-1983 3.0L / SC
• Porsche 911 1984-1986 3.2L
• Porsche 911 1987-1989 3.2L G50

Diagram ref no 11 

The cross over pipe forms an important part of the air-cooled Porsche exhaust system, helping direct exhaust gases between engine banks and associated exhaust components. The clamp plays a critical role in maintaining correct pipe alignment while preventing movement, vibration and exhaust leaks.

Over time, original exhaust clamps can become corroded, weakened or damaged due to repeated heat cycles, moisture exposure and road contamination. Replacing worn clamps helps ensure reliable exhaust system operation and supports long-term durability.

What Does an Exhaust Clamp Do?

An exhaust clamp secures adjoining exhaust components together while helping maintain a tight and stable connection.

A properly functioning exhaust clamp helps:

• Secure exhaust pipe joints
• Maintain correct pipe alignment
• Reduce exhaust movement and vibration
• Help prevent exhaust gas leaks
• Support gasket sealing performance
• Improve exhaust system reliability
• Protect connected exhaust components

Without sufficient clamping force, exhaust joints can loosen and allow gases to escape.

Symptoms of Wear or Failure

Exhaust clamps operate in one of the harshest environments on the vehicle and are constantly exposed to heat, corrosion and vibration.

Common signs that replacement may be required include:

• Visible rust or corrosion
• Cracked or weakened clamp sections
• Loose exhaust joints
• Exhaust blowing noises
• Rattling from the exhaust system
• Exhaust leaks around pipe connections
• Soot deposits around clamp areas
• Distorted or damaged clamp halves
• Difficulty maintaining correct torque

A failing clamp can allow excessive movement within the exhaust system, leading to leaks and additional component wear.

Why Replacement Matters

Replacing a worn exhaust clamp helps maintain exhaust system integrity and prevents unnecessary stress on surrounding components.

Benefits include:

• Restores secure pipe connections
• Reduces exhaust leaks
• Improves exhaust system stability
• Minimises vibration and rattles
• Helps maintain proper exhaust flow
• Protects connected pipes and silencers
• Supports reliable long-term performance
• Improves repair and restoration quality

For classic air-cooled Porsche 911 models, replacing ageing exhaust hardware is an important part of maintaining both performance and reliability.

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Particulate Matter Sensor.

The Particulate Matter Sensor is an advanced emissions control component designed to monitor the level of particulate matter (soot particles) present in the vehicle’s exhaust system. Installed within the exhaust after-treatment system, the sensor continuously measures particulate emissions and provides real-time data to the engine control unit (ECU).

Fits:

• Porsche 971.1 Panamera 4S Diesel V8 4.0L 4WD (422 Hp) 2017-18
• Porsche 971.1 Panamera 4S Diesel 4.0L Twin-Turbo V8 Sport Turismo 2017-18

  
Diagram Ref No 7

This information allows the ECU to monitor the efficiency of the particulate filter system, manage regeneration cycles, and ensure compliance with modern emissions regulations. Manufactured to OEM specifications, the particulate matter sensor delivers accurate readings, reliable operation, and long-term durability in high-temperature exhaust environments.

What This Product Does:

• Monitors particulate matter (soot) levels within the exhaust system
• Provides real-time emissions data to the engine control unit (ECU)
• Supports diesel or gasoline particulate filter monitoring
• Helps manage particulate filter regeneration cycles
• Ensures emissions system efficiency and compliance
• Assists in diagnosing exhaust after-treatment system faults

Symptoms Of Wear Or Failure:

• Check engine light or emissions warning light illumination
• Particulate filter warning messages on the dashboard
• Failed emissions tests or inspections
• Frequent or unsuccessful particulate filter regeneration cycles
• Reduced engine performance or limp-home mode activation
• Increased exhaust emissions
• Particulate sensor-related fault codes stored in the ECU
• Poor monitoring of diesel or gasoline particulate filter efficiency

Why Replacement Matters:

• Restores accurate particulate emissions monitoring
• Ensures proper particulate filter regeneration management
• Helps maintain emissions compliance and MOT readiness
• Prevents unnecessary warning lights and fault codes
• Supports efficient operation of the exhaust after-treatment system
• Reduces the risk of particulate filter blockage and costly repairs
• Improves overall engine management system accuracy
• Maintains long-term reliability and environmental performance of the vehicle

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9A790626100

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