Oil Tank & Parts

Oil level dipstick

Fits:
Porsche 911 3.0-3.3 1981-89

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Diagram ref no 10

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93010773101

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Oil level dipstick.

Fits:
Porsche 911 3.0-3.3 81-89

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Diagram ref no 10

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93010773101

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Oil Level Sender Unit Cork Gasket

Prevent oil leaks and maintain the integrity of your Porsche dry sump lubrication system with this OE Match Oil Level Sender Unit Cork Gasket. Designed for Porsche 911 models from 1965 to 1989, this gasket provides the critical seal between the oil level sender unit and the external oil tank.

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 4

The oil level sender unit is responsible for monitoring the oil level within the tank and transmitting this information to the dashboard oil level gauge. The cork gasket creates a leak-free seal around the sender flange, preventing oil seepage while maintaining accurate oil level monitoring.

Although small and inexpensive, this gasket plays an important role in keeping the oil system properly sealed. During maintenance, sender replacement or oil tank restoration work, fitting a new gasket is highly recommended to prevent leaks and ensure reliable operation.

What Does an Oil Level Sender Unit Cork Gasket Do?

The gasket sits between the oil level sender unit and the oil tank mounting surface.

Its primary functions include:

• Creating a leak-proof seal
• Preventing oil seepage around the sender unit
• Maintaining oil tank integrity
• Supporting accurate oil level monitoring
• Preventing contamination from entering the oil tank
• Protecting surrounding engine bay components from oil leaks

A properly sealed sender unit helps maintain a clean engine bay and accurate oil system operation.

Why Do Oil Level Sender Gaskets Fail?

Cork gaskets naturally compress over time and are constantly exposed to oil, heat and vibration.

Common causes of failure include:

• Age-related hardening
• Compression set
• Shrinkage over time
• Heat cycling
• Oil saturation
• Improper installation
• Damage during sender removal
• Long-term storage deterioration

As the gasket loses elasticity, oil can begin to seep around the sender mounting flange.

When Should the Gasket Be Replaced?

The gasket should always be replaced whenever the oil level sender unit is removed.

Common signs of failure include:

• Oil leaks around the oil tank sender unit
• Oil residue on the oil tank
• Oil staining in the engine bay
• Perished or brittle gasket material
• Sender unit removal during servicing
• Oil tank refurbishment projects
• Oil level sender replacement

Replacing the gasket during routine maintenance is inexpensive insurance against future oil leaks.

Why Replacement Matters

A leaking oil sender gasket may appear minor but can lead to persistent oil leaks and unnecessary mess within the engine bay.

Benefits of replacement include:

• Prevents oil leaks
• Maintains proper oil tank sealing
• Protects engine bay components
• Supports accurate oil level monitoring
• Improves reliability
• Reduces maintenance clean-up
• Ideal for restoration projects
• Restores factory sealing performance

For classic Porsche 911 models, maintaining the dry sump oil system is essential for both reliability and originality.

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91420189100

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Oil level sender. Fits inside oil tank.

Fits:
Porsche 911 1974-89

Click 'zoom in' for large parts diagram.
Diagram ref no 2.

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91164154105

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Oil level sender.
Fits inside oil tank.

Fits:
Porsche 911 1974 - 1989

Diagram Ref No 2.

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91164154105

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Oil Level Sender 

Restore accurate oil level monitoring with this OE Match Oil Level Sender. Manufactured for precise fitment and dependable performance, this replacement oil level sender accurately measures the oil level within the external oil tank and transmits the information to the dashboard oil level gauge.
 
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 2

The dry sump lubrication system used on the classic air-cooled Porsche 911 relies on an external oil tank and a dedicated oil level sender to provide the driver with an accurate indication of the engine's oil level. Over time, internal electrical components, the float mechanism and electrical contacts can deteriorate through age, heat and continual exposure to engine oil. This can result in inaccurate oil level readings or complete failure of the dashboard oil level gauge.

Replacing a worn or faulty oil level sender restores confidence in your vehicle's instrumentation, allowing you to accurately monitor the engine's oil level and maintain the correct quantity of lubricant for reliable engine operation.

Whether you're restoring a classic Porsche, repairing a faulty oil level gauge or carrying out preventative maintenance on the lubrication system, this OE Match Oil Level Sender offers a high-quality replacement solution.

What Does the Oil Level Sender Do?

The oil level sender continuously monitors the oil level inside the external oil tank and sends an electrical signal to the dashboard oil level gauge.

Its primary functions include:

• Measuring the oil level within the oil tank.
• Providing accurate information to the dashboard oil level gauge.
• Helping monitor the engine's lubrication system.
• Supporting routine oil level checks.
• Assisting with correct engine oil maintenance.
• Maintaining reliable dashboard gauge operation.

Accurate oil level monitoring is particularly important on dry sump Porsche engines, where maintaining the correct oil quantity is essential for reliable lubrication.

Why Do Oil Level Senders Fail?

Over many years of operation, the sender unit is constantly exposed to hot engine oil, vibration and temperature fluctuations.

Common causes of failure include:

• Internal electrical wear.
• Corrosion of electrical contacts.
• Float mechanism deterioration.
• Oil contamination.
• Age-related component fatigue.
• Damaged wiring connections.
• Sticking float movement.
• Internal resistance failure.

Typical symptoms include:

• Oil level gauge reading permanently empty or full.
• Fluctuating or erratic oil level readings.
• Inaccurate oil level indication.
• Intermittent gauge operation.
• Oil gauge failing to respond after servicing.
• Difficulty monitoring engine oil level.

Replacing the sender restores accurate oil level information and dependable instrument operation.

Benefits

• Restores accurate oil level readings.
• Improves confidence in engine oil monitoring.
• Helps maintain correct engine oil levels.
• Reliable electrical performance.
• Straightforward direct replacement.
• Suitable for both restored and regularly driven vehicles.

For the most accurate oil level readings, Porsche recommends checking the oil level with the engine fully warmed to operating temperature, idling on level ground, as specified in the owner's handbook. Whenever replacing the sender, it is also advisable to inspect the wiring connector and oil tank sealing gasket.

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91164154105

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Oil pipe oil tank to thermostat.

Fits:
Porsche 911 3.0L 1974-83
Porsche 911 3.2L 1984-89

OE Part numbers
- 91110773010
- 91110773011

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Diagram Ref No 17.

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91110773013

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Oil pipe oil tank to thermostat
This OE Match oil pipe is a replacement engine oil line running from the oil tank to the thermostat on Porsche 911 models from 1974 to 1989. It is designed to match the original-style fitment and function, helping maintain correct oil flow through the external oil cooling system.

Fits:
Porsche 911 3.0L 1974 - 1983
Porsche 911 3.2L 1984 - 1989

Diagram Ref No 17

Previous Porsche Part Numbers: 91110773010 / 91110773011

The oil pipe carries engine oil between the oil tank and the thermostat as part of the Porsche 911 dry-sump oil system. The thermostat controls oil flow to the external oil cooler circuit when the oil reaches operating temperature, helping regulate engine oil temperature and protect the engine during driving.

Functions
•  Replaces the oil pipe from oil tank to thermostat
•  Supports correct engine oil circulation
•  Forms part of the external oil cooling system
•  Helps maintain stable engine oil temperature
•  Supports dry-sump oil system operation
•  Replaces corroded, leaking, crushed, blocked, or damaged original oil pipes
•  OE Match replacement for Porsche 911 oil system repair and restoration.

Why Replace This Part?
External oil pipes are exposed to road dirt, heat, vibration, corrosion, oil pressure, and age-related wear. Over time, the pipe can corrode, leak, become crushed, seize at the fittings, or suffer damage during removal or repair work. A faulty oil pipe may cause oil leaks, reduced oil flow, poor cooling performance, or oil system reliability issues. Replacing the pipe helps restore secure oil transfer and dependable engine cooling.

When to Replace This Part
•  Oil leaks are visible around the pipe or fittings
•  The pipe is corroded, crushed, kinked, blocked, or damaged
•  Oil thermostat or oil tank connections are being serviced
•  External oil lines are being refreshed during restoration
•  Fittings are seized or damaged during removal
•  Engine oil cooling performance is reduced
•  The vehicle is undergoing Porsche 911 oil system restoration

Where it fits on the car
This oil pipe fits between the oil tank and oil thermostat on Porsche 911 models. It forms part of the external engine oil circulation and cooling system.

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91110773013

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Oil tank bracket.

Fits:
Porsche 911 1973-89
Porsche 911 (930) Turbo 1975-89

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Diagram ref no 17

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90150193022

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Oil Tank Cap Bayonet fitting type

Fits:
Porsche 911 1973-86*
*fit oil tank 9111070061, 91110700620, 91110700630

Porsche 993 1994-98

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91110707204

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Oil Tank Cap Bayonet Fitting Type.

The OE MATCH Oil Tank Cap – Bayonet Fitting Type is a replacement engine oil tank filler cap designed for selected air-cooled Porsche 911 and Porsche 993 models equipped with the corresponding dry-sump lubrication system.

Fits:
Porsche 911 1978-86*
*fit oil tank 9111070061, 91110700620, 91110707203
Porsche 911 1970-98

Manufactured to match the original equipment fitting arrangement, this cap provides a secure closure for the external engine oil tank's filler opening, helping protect the lubrication system from dirt, dust, moisture and other environmental contaminants.

Unlike conventional engines that store most of their lubricating oil in a sump beneath the crankshaft, the air-cooled Porsche 911 uses a dry-sump lubrication system with a separate oil reservoir.

This external oil tank stores the engine oil and forms an important part of the circulation system that supplies lubrication to the engine's moving components.

The oil tank filler cap allows access to the reservoir when topping up engine oil or carrying out routine servicing.

Its bayonet-style fastening mechanism is designed to engage with the corresponding oil tank filler neck, providing a secure and convenient closure.

The correct fitting and condition of the oil tank cap are important for maintaining a clean, properly enclosed oil reservoir.

Over time, an original oil tank cap may deteriorate due to repeated removal, exposure to heat, oil residue, vibration and natural ageing. The sealing surface may become damaged, while the locking tabs or bayonet mechanism may become worn or distorted.

A loose, damaged or incorrectly fitting oil tank cap may allow oil mist or residue to escape around the filler neck and permit contaminants to enter the tank.

Replacing a deteriorated cap with the OE MATCH Oil Tank Cap 91110707204/1 helps restore secure closure of the oil filler opening, maintain the cleanliness of the lubrication system and preserve the original Porsche oil tank arrangement.

Ideal for routine servicing, oil tank refurbishment, engine bay restoration and classic Porsche maintenance.

What This Product Does:
The oil tank cap provides a removable closure for the engine oil reservoir's filler opening.

Its primary functions include:

• Closes the Oil Filler Opening: Provides a secure cover for the external engine oil tank.
• Helps Prevent Contamination: Reduces the entry of dust, dirt and debris during normal vehicle operation.
• Reduces Moisture Ingress: Helps prevent rainwater, splashes and other external moisture from entering through the filler opening.
• Provides Secure Bayonet Engagement: Uses the corresponding bayonet-style locking mechanism to retain the cap on the filler neck.
• Helps Contain Oil Mist: Reduces the escape of oil mist and minor oil residue around the filler opening.
• Maintains Oil Tank Cleanliness: Helps protect the oil stored within the dry-sump lubrication reservoir.
• Supports Routine Oil Servicing: Can be removed to allow engine oil to be added through the correct filler point.
• Maintains Original Equipment Fitment: Preserves the factory-style oil tank cap arrangement.
• Protects the Filler Neck: Covers the opening when oil is not being added.
• Supports Lubrication System Maintenance: Helps maintain a clean and properly closed oil reservoir.

Symptoms Of Wear Or Failure:
The oil tank filler cap is regularly removed during maintenance and is exposed to heat, engine oil and vibration.

Over time, the locking mechanism and sealing surfaces may deteriorate.

Common symptoms of a worn or failing oil tank cap include:

• Loose-Fitting Cap: The cap may not sit securely on the oil tank filler neck.
• Difficulty Locking the Cap: The bayonet tabs may no longer engage smoothly or correctly.
• Cap Not Remaining Secure: A damaged locking arrangement may allow the cap to loosen.
• Worn Bayonet Tabs: Repeated operation or incorrect installation may wear the retaining surfaces.
• Damaged Sealing Surface: The cap may no longer make proper contact with the filler neck.
• Hardened or Deteriorated Seal: Where a sealing element is fitted, ageing may cause it to become brittle, flattened or damaged.
• Oil Residue Around the Filler Neck: Oil mist or seepage may appear around a cap that is not closing correctly.
• Oil Smell in the Engine Compartment: Oil vapours escaping around the filler opening may produce a noticeable odour.
• Visible Cracks or Deformation: Physical damage may prevent the cap from fitting or locking correctly.
• Corrosion or Deterioration: Age-related damage may affect the cap's locking or contact surfaces.
• Missing Oil Tank Cap: The original cap may have been misplaced during servicing.
• Incorrect Replacement Cap: A cap with the wrong locking arrangement may not fit the oil tank correctly.
• Contamination Around the Filler Opening: Dirt and debris may accumulate where the filler neck is not adequately covered.

Why Replacement Matters:
Replacing a worn, damaged or missing oil tank cap is important for maintaining the cleanliness and correct closure of the dry-sump lubrication system.

• Restores Secure Oil Tank Closure: Replaces a loose or damaged cap with the correct bayonet-style fitting.
• Helps Prevent Dirt Ingress: Protects the oil reservoir against external contamination.
• Reduces Moisture Exposure: Helps prevent water and moisture entering through the filler opening.
• Maintains Oil Cleanliness: Supports the condition of the oil stored within the external reservoir.
• Reduces Oil Mist Escape: Helps contain oil mist and minor seepage at the filler neck where the cap is responsible.
• Supports Reliable Cap Retention: Provides the specified locking engagement for compatible oil tanks.
• Maintains Original Equipment Appearance: Restores the factory-style filler cap arrangement.
• Protects Lubrication System Components: Helps prevent foreign material entering the oil circuit through the filler neck.
• Improves Servicing Convenience: Provides a correctly fitting cap for routine oil top-ups.
• Supports Preventative Maintenance: Addresses wear before the cap becomes insecure or is lost.
• Original Equipment-Style Fitment: Designed to correspond with the specified Porsche bayonet filler arrangement.
• Suitable for Engine Bay Restoration: Helps maintain the original appearance of classic Porsche oil tank installations.
• Cost-Effective Replacement: A relatively simple component that helps protect an important lubrication system.

The external oil tank is a critical part of the dry-sump lubrication system used in air-cooled Porsche engines.

Keeping the oil reservoir properly closed helps prevent foreign material from entering the oil supply.

Dirt, water or other contamination introduced through an open or improperly covered filler neck can affect lubricant cleanliness and may contribute to unwanted wear if it circulates through the engine.

A damaged cap may also allow oil residue to accumulate around the filler opening, making the engine compartment harder to keep clean and potentially obscuring other leaks.

Although replacing the filler cap will not cure unrelated oil leaks or lubrication problems, fitting the correct cap restores an important protective feature of the oil tank.

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91110707204

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Oil tank cap gasket.

Fits:
Porsche 911 1978-86
Porsche 993 1994-98

Click 'Zoom in' for large parts diagram.
Diagram ref no 12

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Oil tank cap gasket.

Fits:
Porsche 356 B-T6 / C
Porsche 911 1965-86
Porsche 914 1970-76
Porsche 993 1994-98

Diagram ref no 12

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Oil Tank Drain Plug Washer.
This Porsche Genuine OE Oil Tank Drain Plug Washer is a factory-specified sealing washer designed for the oil tank drain plug used on classic air-cooled Porsche 911 models. Manufactured to Porsche’s original specifications, this washer ensures a reliable seal between the drain plug and the oil tank, preventing oil leaks during engine operation or after routine oil changes.
Sold each

Fits:
Porsche 911 1970 - 1989

Diagram ref no 12.

This drain plug washer acts as a compressible sealing ring that sits between the oil tank drain plug and the oil tank surface. When the drain plug is tightened, the washer compresses slightly to create a tight oil-resistant seal, preventing oil from leaking around the plug threads.

It is designed to withstand high temperatures, engine oil exposure, and repeated service cycles, making it essential for maintaining a clean and leak-free lubrication system.

Fitment / Position on Car
•  Installed on: Oil tank drain plug
•  Location: Between the drain plug head and oil tank surface
•  System: Dry-sump engine oil lubrication system used in classic 911 models

During an oil change, the drain plug washer compresses to create a seal. Reusing old washers can lead to oil seepage, contamination, or loose sealing surfaces. Installing a new genuine Porsche washer ensures a proper seal every time the drain plug is removed and reinstalled, protecting both the engine and surrounding components from oil leaks.

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Oil Tank Drain Plug. Porsche 911 1965-89

Fits:
Porsche 911 1965-89

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Diagram ref no 11.

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Oil tank drain plug. Galvanized. M22 x 1.5 x 13.5

Fits:
Porsche 911 1965-89

Click 'Zoom in' for large parts diagram.
Diagram ref no 11.

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