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Engine Block Hoses

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DISPLAYING 1 to 15 (of 15 products)
Special Order item
95810631401
Product Information
Product Information
Coolant Breather Line, Rear.

The Coolant Breather Line, Rear is a genuine Porsche cooling system component designed to allow controlled ventilation within the rear section of the engine’s coolant circuit. This breather line helps release trapped air from the cooling system, ensuring smooth and consistent coolant circulation.

Fits:

  • Porsche 958 Cayenne V6 3.0L Diesel (245Hp) 2012-17
  • Porsche 970.1 Panamera Diesel V6 3.0L 2011-13
  • Porsche 970.2 Panamera Diesel V6 3.0L (250Hp) 2014-16
  • Porsche 95B.1 Macan S Diesel 3.0L V6 (258Bhp) 2014-18
  
Diagram Ref No 12

What This Product Does:

  • Allowing trapped air to escape from the coolant circuit
  • Preventing air pockets within the cooling system
  • Supporting consistent coolant flow
  • Maintaining correct system pressure balance
  • Helping ensure stable engine operating temperature

Symptoms Of Wear Or Failure:
  • Coolant leaks near the rear of the engine
  • Visible cracks, brittleness, or splits in the line
  • Coolant smell from the engine bay
  • Low coolant warning light
  • Air in the cooling system after bleeding
  • Fluctuating engine temperature
  • Overheating due to trapped air pockets

Why Replacement Matters:
  • Maintain proper coolant circulation
  • Prevent air pockets and overheating
  • Ensure stable system pressure
  • Avoid coolant loss and breakdowns
  • Protect the engine from costly heat damage



Related reference numbers
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95810631401
95810631401
95810631400

The product you are viewing cross references to these numbers
95810631401/1
Product Information
Product Information
Coolant Breather Line, Rear.

The Coolant Breather Line, Rear is a OE MATCH cooling system component designed to allow controlled ventilation within the rear section of the engine’s coolant circuit. This breather line helps release trapped air from the cooling system, ensuring smooth and consistent coolant circulation.

Fits:

  • Porsche 958 Cayenne V6 3.0L Diesel (245Hp) 2012-17
  • Porsche 970.1 Panamera Diesel V6 3.0L 2011-13
  • Porsche 970.2 Panamera Diesel V6 3.0L (250Hp) 2014-16
  • Porsche 95B.1 Macan S Diesel 3.0L V6 (258Bhp) 2014-18
  
Diagram Ref No 12

What This Product Does:

  • Allowing trapped air to escape from the coolant circuit
  • Preventing air pockets within the cooling system
  • Supporting consistent coolant flow
  • Maintaining correct system pressure balance
  • Helping ensure stable engine operating temperature

Symptoms Of Wear Or Failure:
  • Coolant leaks near the rear of the engine
  • Visible cracks, brittleness, or splits in the line
  • Coolant smell from the engine bay
  • Low coolant warning light
  • Air in the cooling system after bleeding
  • Fluctuating engine temperature
  • Overheating due to trapped air pockets

Why Replacement Matters:
  • Maintain proper coolant circulation
  • Prevent air pockets and overheating
  • Ensure stable system pressure
  • Avoid coolant loss and breakdowns
  • Protect the engine from costly heat damage



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95810631401
95810631401
95810631400

The product you are viewing cross references to these numbers
Special Order item
95810607100
Product Information
Product Information
Coolant Hose.
Seal Included.

Fits:
Porsche 92A Cayenne (958) 3.0L Diesel 2011>>2018
Cars With Engine Codes:
D1V / D43 / D50 / D51 / DV7

Porsche 970 Panamera MKI / MKII 3.0L Diesel 2010>>2016
Cars With Engine Codes:
CRCC / CRCB / CWJA 

Diagram Ref No 14
(Diagram Ref No 15 Included)

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

95810607100
95810607100

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Special Order item
95810662501
Product Information
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Coolant Hose.

The Coolant Hose is a genuine Porsche cooling system component designed to maintain consistent coolant flow throughout the engine’s cooling circuit. Engineered to operate under high temperatures and continuous system pressure, this hose plays a crucial role in regulating engine temperature and preventing overheating.

Fits:

  • Porsche 958 Cayenne V6 3.0L Diesel (245Hp) 2012-17
  • Porsche 970.1 Panamera Diesel V6 3.0L 2011-13
  • Porsche 970.2 Panamera Diesel V6 3.0L (250Hp) 2014-16
  • Porsche 95B.1 Macan S Diesel 3.0L V6 (258Bhp) 2014-18  

Diagram Ref No 37

What This Product Does:

  • Transferring coolant between key cooling system components 
  • Maintaining steady coolant circulation
  • Supporting correct cooling system pressure
  • Helping regulate engine operating temperature
  • Preventing overheating during normal and high-load driving conditions

Symptoms Of Wear Or Failure:
  • Coolant leaks or fluid visible beneath the vehicle
  • Cracked, brittle, swollen, or soft hose material
  • Coolant smell from the engine bay
  • Low coolant warning light
  • Engine overheating or fluctuating temperature readings
  • Steam from the engine compartment
  • Coolant residue around hose connections

Why Replacement Matters:
  • Prevent sudden coolant loss and roadside breakdowns
  • Maintain proper coolant circulation and temperature control
  • Protect the engine from overheating damage
  • Restore cooling system reliability
  • Avoid costly repairs caused by heat-related engine failure



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

95810662501
95810662501
95810662500

The product you are viewing cross references to these numbers
95810662501/1
Product Information
Product Information
Coolant Hose.

The Coolant Hose is a OE MATCH cooling system component designed to maintain consistent coolant flow throughout the engine’s cooling circuit. Engineered to operate under high temperatures and continuous system pressure, this hose plays a crucial role in regulating engine temperature and preventing overheating.

Fits:

  • Porsche 958 Cayenne V6 3.0L Diesel (245Hp) 2012-17
  • Porsche 970.1 Panamera Diesel V6 3.0L 2011-13
  • Porsche 970.2 Panamera Diesel V6 3.0L (250Hp) 2014-16
  • Porsche 95B.1 Macan S Diesel 3.0L V6 (258Bhp) 2014-18  

Diagram Ref No 37

What This Product Does:

  • Transferring coolant between key cooling system components 
  • Maintaining steady coolant circulation
  • Supporting correct cooling system pressure
  • Helping regulate engine operating temperature
  • Preventing overheating during normal and high-load driving conditions

Symptoms Of Wear Or Failure:
  • Coolant leaks or fluid visible beneath the vehicle
  • Cracked, brittle, swollen, or soft hose material
  • Coolant smell from the engine bay
  • Low coolant warning light
  • Engine overheating or fluctuating temperature readings
  • Steam from the engine compartment
  • Coolant residue around hose connections

Why Replacement Matters:
  • Prevent sudden coolant loss and roadside breakdowns
  • Maintain proper coolant circulation and temperature control
  • Protect the engine from overheating damage
  • Restore cooling system reliability
  • Avoid costly repairs caused by heat-related engine failure



Related reference numbers
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95810662501
95810662501
95810662500

The product you are viewing cross references to these numbers
Special Order item
95810646601
Product Information
Product Information
Cooling system breather pipe

porsche

Fits:
Porsche 958 Cayenne 3.0L Diesel 2012-18
Porsche 95B Macan 3.0L Diesel 2014-18
Porsche 970 Panamera 3.0L Diesel 2010-16

Click 'Zoom in' for large parts diagram.
Diagram ref no 23

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95810646601
95810646601
95810646600

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Special Order item
95810606500
Product Information
Product Information
Cooling water tube.

porsche

Fits:
Porsche 958 Cayenne 3.0L Diesel 2012-18
Porsche 95B Macan 3.0L Diesel 2014-18
Porsche 970 Panamera 3.0L Diesel 2011-16

Click 'Zoom in' for large parts diagram.
Diagram ref no 17

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95810606500
95810606500

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Special Order item
94610602661
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Engine coolant vent line
This original Porsche coolant vent / breather line forms part of the engine cooling system, helping bleed air and route coolant vapour or coolant flow correctly through the cooling circuit.

Fits:
Porsche 958 Cayenne 3.6L 2011 - 2018
Porsche 95B.1 Macan 3.0L / 3.6L  2014 - 2018
Porsche 970.2 Panamera 3.0L 2013 - 2016

Diagram ref no 12

What This Part Does / Functions
Helps vent air from the engine cooling system
 Routes coolant or coolant vapour through the correct cooling circuit path
 Supports proper coolant circulation and system bleeding
 Helps reduce the risk of trapped air pockets in the cooling system
 Assists stable engine operating temperature
 Replaces a cracked, brittle, leaking or damaged original vent line
 Provides correct OE Porsche routing, shape and connection fitment
 Supports reliable cooling system performance.

Why Replace This Part?
Coolant vent lines are exposed to heat cycles, coolant pressure, vibration and age-related plastic or rubber deterioration. Over time, the line can become brittle, crack, split or leak. A failed coolant vent line may cause coolant loss, coolant smell, low coolant warnings, pressure loss or overheating. Replacing it with a Genuine Porsche OE engine coolant vent line helps restore correct cooling system venting and factory fitment. This is especially important on Porsche V6 applications where the coolant vent line routing is critical to proper system bleeding and coolant circulation.

Common Symptoms of a Faulty Coolant Vent Line
  Coolant smell from the engine bay
  Visible coolant leak or dried coolant residue
  Low coolant warning
  Cooling system pressure loss
  Air trapped in the cooling system
  Engine temperature fluctuations
  Brittle, cracked or broken coolant line
  Coolant seepage after previous cooling system work.

When to Replace
  This Part If the original vent line is cracked, brittle, leaking or damaged
  If coolant loss is traced to the vent line
  During cooling system overhaul or hose replacement
  When replacing related coolant pipes, hoses or thermostat components
  If the cooling system is difficult to bleed correctly
  During intake manifold or engine-top service where the line is disturbed
  When recommissioning a vehicle with unknown cooling system history

Where It Fits on the Car
This coolant vent line fits in the engine cooling system, routed around the engine coolant pipework / breather circuit. It connects into the coolant venting system and helps remove air from the cooling circuit. Correct routing and secure connections are important to prevent leaks and maintain proper cooling system operation.

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

94610602661
94610602660
94610602661

The product you are viewing cross references to these numbers
94610602661/1
Product Information
Product Information
Engine coolant vent line
OE Match engine coolant vent line for Porsche 958 Cayenne, 95B.1 Macan, and 970.2 Panamera models. This replacement cooling system vent line helps route coolant and air bleed flow correctly, supporting reliable cooling system operation and proper system bleeding.

Fits:
Porsche 958 Cayenne 3.6L 2011 - 2018
Porsche 95B.1 Macan 3.0L / 3.6L  2014 - 2018
Porsche 970.2 Panamera 3.0L 2013 - 2016

Diagram ref no 12

The coolant vent line helps move trapped air and coolant through the cooling system venting circuit. Correct vent line operation supports cooling system bleeding, helps prevent air pockets, and assists stable coolant circulation during engine operation.

Functions
Replaces the engine coolant vent line
• Helps route coolant and air bleed flow correctly
 Supports cooling system bleeding and circulation
 Helps prevent trapped air within the coolant system
 Helps maintain stable engine operating temperature
 Suitable for coolant leak repair, engine service, or preventive maintenance
•  OE Match replacement for Porsche cooling system service

Why Replace This Part?
Coolant vent lines can harden, crack, swell, split, leak, or become blocked due to age, heat cycles, coolant exposure, pressure, and engine bay conditions. A damaged or restricted vent line may cause coolant loss, air pockets, overheating symptoms, coolant smell, pressure loss, or visible residue around the engine bay. Replacing the vent line helps restore correct cooling system integrity and reliable air bleeding.

When to Replace This Part
•   Coolant leak is visible from the vent line area
•   Hose or line is cracked, brittle, swollen, split, or soft
•   Cooling system pressure loss is present
•   Coolant smell or residue is noticed in the engine bay
•   Overheating or trapped air symptoms are present
•   Cooling system service or engine repair is being carried out
•   Preventive hose replacement is required during restoration or maintenance.

Where it fits on the car
This vent line fits within the engine cooling system / coolant vent circuit on applicable Porsche 958 Cayenne, 95B.1 Macan, and 970.2 Panamera models.

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

94610602661
94610602660
94610602661

The product you are viewing cross references to these numbers
97057258300/1
Product Information
Product Information
Heater Hose Supply On Water Pump.

The Heater Hose Supply on Water Pump is a OE MATCH heater hose designed to supply hot engine coolant from the water pump to the heater circuit. This hose plays a key role in the vehicle’s heating system by delivering warmed coolant to the heater core, enabling effective cabin heating. It offers precise fitment, high resistance to heat and pressure, and long-term reliability for Porsche Panamera (970) models.

Fits:

  • Porsche 970.1 Panamera V6 3.6L 2WD 2009-13
  • Porsche 970.1 Panamera 4 V6 3.6L 4WD 2009-13
  • Porsche 970.1 Panamera S V8 4.8L 2009-13
  • Porsche 970.1 Panamera 4S V8 4.8L 2009-13
  • Porsche 970.1 Panamera GTS V8 4.8L 2011-13
  • Porsche 970.1 Panamera Turbo V8 4.8L 2009-13
  • Porsche 970.1 Panamera Turbo S V8 4.8L 2009-13
  • Porsche 970.1 Panamera Diesel V6 3.0L 2011-13
  • Porsche 970.1 Panamera S Hybrid V6 3.0L 2011-13
  • Porsche 970.2 Panamera V6 3.6L 2WD (310Hp) 2014-16
  • Porsche 970.2 Panamera 4 V6 3.6L 4WD (310Hp) 2014-16
  • Porsche 970.2 Panamera S V6 Turbo 3.0L 2WD (420Hp) 2014-16
  • Porsche 970.2 Panamera S V6 Turbo 3.0L 2WD Executive 2014-16
  • Porsche 970.2 Panamera 4S V6 Turbo 3.0L 4WD (420Hp) 2014-16
  • Porsche 970.2 Panamera 4S V6 Turbo 3.0L 4WD Executive 2014-16
  • Porsche 970.2 Panamera GTS V8 4.8L 4WD (440Hp) 2014-16
  • Porsche 970.2 Panamera Turbo V8 4.8L (520Hp) 2014-16
  • Porsche 970.2 Panamera Turbo V8 Executive 2014-16
  • Porsche 970.2 Panamera Turbo S V8 4.8L 2014-16
  • Porsche 970.2 Panamera Diesel V6 3.0L (250Hp) 2014-16
  • Porsche 970.2 Panamera S E-Hybrid V6 3.0L (416Hp) 2014-16  

Diagram Ref No 5

What This Product Does:
  • Supplies hot engine coolant from the water pump outlet to the heater core circuit.
  • Enables cabin heating, as the heater core relies on hot coolant to warm the air blown into the interior.
  • Helps maintain proper coolant circulation between the engine cooling system and the HVAC system.
  • Provides a flexible connection that absorbs engine movement, vibration, and thermal expansion.

Symptoms Of Wear Or Failure:
  • Coolant may seep or drip from the hose itself or at the connection points, often leaving pink/white residue.
  • A failing heater supply hose can cause gradual coolant loss, requiring frequent top-ups.
  • If hot coolant isn’t reaching the heater core, the heater may blow lukewarm or cold air, even when the engine is warm.
  • A noticeable sweet smell in the engine bay or inside the cabin often indicates a coolant leak in the heater circuit.
  • Common signs include cracking or splitting, bulging or swelling, hardened or brittle rubber, wet staining around the hose.
  • Coolant loss from the heater supply hose can contribute to overheating or unstable engine temperatures.
  • Modern Porsche models may display low-coolant or temperature warnings when the hose begins to fail.

Why Replacement Matters:
  • Prevents coolant leaks that can lead to low coolant levels and loss of system pressure.
  • Maintains proper cabin heating, since the heater core depends on a steady supply of hot coolant.
  • Helps avoid engine overheating, as coolant loss from the heater circuit affects overall cooling performance.
  • Restores reliable coolant circulation between the water pump and heater system.
  • Protects surrounding components, as leaking coolant can damage hoses, sensors, wiring, and nearby engine parts.



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

97057258300
97057258300

The product you are viewing cross references to these numbers
Special Order item
97057258300
Product Information
Product Information
Heater hose Supply. On water pump.

porsche

Fits:
Porsche 970 Panamera 2010-16

Click 'Zoom in' for large parts diagram.
Diagram ref no 5

Related reference numbers
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97057258300
97057258300

The product you are viewing cross references to these numbers
Special Order item
97010631201
Product Information
Product Information
Vent line.

porsche

Fits:
Porsche 970 Panamera 2010-16

Click 'Zoom in' for large parts diagram.
Diagram ref no 13

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

97010631201
97010631201

The product you are viewing cross references to these numbers
97010631201/1
Product Information
Product Information
Vent line.

oematch

Fits:
Porsche 970 Panamera - 2010 to 2016

Click 'Zoom in' for large parts diagram.
Diagram ref no 13

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

97010631201
97010631201

The product you are viewing cross references to these numbers
Special Order item
97010640130
Product Information
Product Information
Water hose, Supply.

porsche

Fits:
Porsche 970 Panamera Diesel 3.0L 2012-16

Click 'Zoom in' for large parts diagram.
Diagram ref no 22

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

97010640130
97010640130

The product you are viewing cross references to these numbers
Special Order item
95810645500
Product Information
Product Information
Water hose.

porsche

Fits:
Porsche 958 Cayenne 3.0L Diesel 2012-18
Porsche 95B Macan 3.0L Diesel 2014-18
Porsche 970 Panamera 3.0L Diesel 2012-16

Click 'Zoom in' for large parts diagram.
Diagram ref no 20

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95810645500
95810645500

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DISPLAYING 1 to 15 (of 15 products)
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About Engine Block Hoses

Engine Block Coolant Hoses – Front Engine Porsche Models | Reliable Cooling for Peak Performance

Engine block coolant hoses are critical to maintaining stable engine temperatures and preventing overheating in your Porsche’s front-engine cooling system. These hoses circulate coolant between the engine block, radiator, and heater core, ensuring consistent temperature regulation and efficient heat dissipation — essential for performance, reliability, and longevity.

At Design911, we supply a complete selection of genuine and manufacturer-quality engine block coolant hoses for front-engine Porsche models, including the transaxle models, Cayenne, Panamera, and Macan. Each hose is precisely engineered for a perfect fit and superior heat resistance, offering the same durability, flexibility, and performance as factory-installed components.

What Do Engine Block Coolant Hoses Do?

Coolant hoses in the engine block are responsible for transferring coolant throughout the engine’s cooling circuit. Their main functions include:

  • Carrying coolant between the radiator, water pump, and engine block.
  • Regulating engine temperature for efficient performance.
  • Maintaining system pressure within the cooling system.
  • Preventing heat build-up that can lead to overheating or gasket failure.

Properly functioning coolant hoses are essential for ensuring your Porsche’s front-mounted engine operates within optimal temperature ranges — especially during heavy use or long drives.

Why Do Engine Block Coolant Hoses Fail?

Due to constant exposure to heat, pressure, and coolant chemicals, these hoses naturally degrade over time. Common causes of failure include:

  • Heat damage from prolonged exposure to high engine temperatures.
  • Rubber deterioration or cracking from age and coolant corrosion.
  • Leaks at joints or clamps due to pressure fluctuations.
  • Swelling or soft spots from internal chemical breakdown.
  • Mechanical abrasion from contact with nearby components.

Symptoms of failing hoses include visible coolant leaks, overheating, low coolant levels, or a strong coolant smell from the engine bay.

Why Replace Faulty Engine Block Coolant Hoses?

A leaking or weakened hose can cause serious cooling system failures, including overheating and engine damage. Replacing old or brittle hoses ensures reliable coolant circulation and safeguards your Porsche’s engine performance.

Benefits of replacement include:

  • Restored cooling efficiency and pressure control.
  • Prevention of leaks and overheating.
  • Improved long-term reliability and system safety.
  • Manufacturer-quality materials for perfect fit and heat resistance.

All replacement hoses in this range are constructed using reinforced, high-grade rubber compounds that meet or exceed factory standards, ensuring durability and dependability in all driving conditions.

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