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Porsche > Macan (95B) MK1 (2014-2018) > Engine Cooling > Coolant Hoses and Pipes (Front engine cars) >

Engine Block Hoses

Engine Block Hoses

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DISPLAYING 33 to 42 (of 42 products)
1 2 3
Hose connector y-piece for Porsche 970 Panamera / 95B Macan - 97010657060, 7PP121237
2
Hose connector y-piece for Porsche 970 Panamera / 95B Macan
7PP121237/1
Product Information
Product Information
Hose connector y-piece.




Fits:
Porsche 970 Panamera 3.0L 2014-2016 
Porsche 95B Macan V6 Petrol 2014-2018
Porsche 95B.2 Macan 2019*



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Related, superseded, cross reference or alternative numbers for comparison.

7PP121237
97010657060
7PP121237

The product you are viewing cross references to these numbers
O-Ring 11x2,5 Water Coolant Breather Line. Porsche 957 / 958 Cayenne / 970 Panamera / 95B Macan - 99970758640
2
O-Ring 11x2,5 Water Coolant Breather Line. Porsche 957 / 958 Cayenne / 970 Panamera / 95B Macan
Special Order item
99970758640
Product Information
Product Information

O-Ring – 11 x 2.5mm Water Coolant Breather Line
Sold each

Maintain the integrity of your Porsche's cooling system with this Coolant Breather Line O-Ring.. Measuring 11 x 2.5mm, this factory-original sealing ring is designed to provide a reliable, leak-free seal between the coolant breather line and its associated components.

Fits:

  • Porsche 957 Cayenne S / GTS 4.8L 2007-10
  • Porsche 957 Cayenne Turbo / Turbo S 4.8L 2007-10
  • Porsche 958 Cayenne Turbo V8 4.8L Petrol (500Hp) 2010-17
  • Porsche 958 Cayenne Turbo S V8 4.8L Petrol (550Hp) 2010-17
  • 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 95B.1 Macan GTS Petrol 3.0L V6 (360Bhp) 2014-18
  • Porsche 95B.1 Macan Turbo 3.6L V6 (400Bhp) 2014-18

Diagram ref no 12

Although small, this sealing ring plays a vital role in maintaining the integrity of the cooling system. It creates a watertight seal between the breather line and its mating components, preventing coolant leaks while allowing the cooling system to maintain the correct operating pressure. Replacing ageing or damaged O-rings during cooling system maintenance helps prevent coolant loss, overheating and expensive engine repairs.

What Does the Water Coolant Breather Line O-Ring Do?

The coolant breather line O-ring seals the connection between coolant pipes and breather line fittings within the engine's cooling system.

Its functions include:

  • Preventing coolant leaks.
  • Maintaining cooling system pressure.
  • Ensuring efficient coolant circulation.
  • Preventing air from entering the cooling system.
  • Supporting correct engine operating temperatures.
  • Helping maximise cooling system efficiency.

A correctly sealing O-ring is essential for maintaining the performance and reliability of the engine cooling system.

Why Does the O-Ring Need Replacing?

Over time, coolant seals are subjected to constant temperature fluctuations and coolant exposure, causing them to deteriorate.

Common causes of failure include:

  • Heat cycling.
  • Age-related hardening.
  • Loss of elasticity.
  • Coolant chemical degradation.
  • Damage during removal.
  • Compression set after years of service.
  • Cooling system repairs requiring seal replacement.

As with most sealing components, O-rings should always be replaced once removed.

Symptoms of a Failing Coolant Breather Line O-Ring

Signs of a worn or damaged seal include:

  • Coolant leaks around the breather line.
  • Pink, white or dried coolant residue.
  • Low coolant warning messages.
  • Frequent coolant top-ups.
  • Sweet coolant smell from the engine bay.
  • Reduced cooling system pressure.
  • Small coolant drips after driving.

Replacing the O-ring at the first sign of leakage helps prevent overheating and further cooling system damage.

When Should the O-Ring Be Replaced?

Replacement is recommended whenever:

  • The coolant breather pipe is removed.
  • Cooling system components are replaced.
  • A coolant leak is diagnosed.
  • Carrying out thermostat or water pump repairs.
  • Performing preventative cooling system maintenance.
  • Rebuilding or servicing the engine.

Installing a new O-ring during reassembly ensures a reliable seal and reduces the risk of future coolant leaks.



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

99970758640
99970758640

The product you are viewing cross references to these numbers
O-Ring 11x2,5 Water Coolant Breather Line. Porsche 957 / 958 Cayenne / 970 Panamera / 95B Macan - 99970758640 - ORS34382
2
O-Ring 11x2,5 Water Coolant Breather Line. Porsche 957 / 958 Cayenne / 970 Panamera / 95B Macan
99970758640/1
Product Information
Product Information

O-Ring – 11 x 2.5mm Water Coolant Breather Line
Sold each

Ensure a reliable, leak-free cooling system with this OE Match O-Ring, measuring 11 x 2.5mm. Designed as a direct replacement for the original seal used on the water coolant breather line.

Fits:

  • Porsche 957 Cayenne S / GTS 4.8L 2007-10
  • Porsche 957 Cayenne Turbo / Turbo S 4.8L 2007-10
  • Porsche 958 Cayenne Turbo V8 4.8L Petrol (500Hp) 2010-17
  • Porsche 958 Cayenne Turbo S V8 4.8L Petrol (550Hp) 2010-17
  • 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 95B.1 Macan GTS Petrol 3.0L V6 (360Bhp) 2014-18
  • Porsche 95B.1 Macan Turbo 3.6L V6 (400Bhp) 2014-18

Diagram ref no 12

Although small, this sealing ring plays a vital role in maintaining the integrity of the cooling system. It creates a watertight seal between the breather line and its mating components, preventing coolant leaks while allowing the cooling system to maintain the correct operating pressure. Replacing ageing or damaged O-rings during cooling system maintenance helps prevent coolant loss, overheating and expensive engine repairs.

Manufactured from high-quality, coolant-resistant elastomer, this OE Match O-ring is designed to match the dimensions and performance of the original Porsche component for dependable long-term sealing.

What Does the Water Coolant Breather Line O-Ring Do?

The coolant breather line O-ring seals the connection between coolant pipes and breather line fittings within the engine's cooling system.

Its functions include:

  • Preventing coolant leaks.
  • Maintaining cooling system pressure.
  • Ensuring efficient coolant circulation.
  • Preventing air from entering the cooling system.
  • Supporting correct engine operating temperatures.
  • Helping maximise cooling system efficiency.

A correctly sealing O-ring is essential for maintaining the performance and reliability of the engine cooling system.

Why Does the O-Ring Need Replacing?

Over time, coolant seals are subjected to constant temperature fluctuations and coolant exposure, causing them to deteriorate.

Common causes of failure include:

  • Heat cycling.
  • Age-related hardening.
  • Loss of elasticity.
  • Coolant chemical degradation.
  • Damage during removal.
  • Compression set after years of service.
  • Cooling system repairs requiring seal replacement.

As with most sealing components, O-rings should always be replaced once removed.

Symptoms of a Failing Coolant Breather Line O-Ring

Signs of a worn or damaged seal include:

  • Coolant leaks around the breather line.
  • Pink, white or dried coolant residue.
  • Low coolant warning messages.
  • Frequent coolant top-ups.
  • Sweet coolant smell from the engine bay.
  • Reduced cooling system pressure.
  • Small coolant drips after driving.

Replacing the O-ring at the first sign of leakage helps prevent overheating and further cooling system damage.

When Should the O-Ring Be Replaced?

Replacement is recommended whenever:

  • The coolant breather pipe is removed.
  • Cooling system components are replaced.
  • A coolant leak is diagnosed.
  • Carrying out thermostat or water pump repairs.
  • Performing preventative cooling system maintenance.
  • Rebuilding or servicing the engine.

Installing a new O-ring during reassembly ensures a reliable seal and reduces the risk of future coolant leaks.



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

99970758640
99970758640

The product you are viewing cross references to these numbers
Water coolant hose. Porsche 958 Cayenne V6 - 95810605600
2
Water coolant hose. Porsche 958 Cayenne V6
Special Order item
95810605600
Product Information
Product Information
Water coolant hose - Tiptronic



Fits:
Porsche 958 Cayenne V6 - 2010 to 2017 (Tiptronic)


Click 'Zoom in' for large parts diagram.
Diagram ref no 28



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

95810605600
95810605600

The product you are viewing cross references to these numbers
Water coolant hose. Porsche 95B.1 Macan 2.0L - 95B121056
2
Water coolant hose. Porsche 95B.1 Macan 2.0L
Special Order item
95B121056
Product Information
Product Information
Water coolant hose.



Fits:
Porsche 95B.1 Macan 2.0L 2014-18
for cars without auxiliary heater / parking heater (option code: 9M0)

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

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

95B121056
95B121056

The product you are viewing cross references to these numbers
Water Coolant Hose. Porsche 95B.1 Macan 2.0L 2014-18 - 95B121056 - 69355
2
Water Coolant Hose. Porsche 95B.1 Macan 2.0L 2014-18
95B121056/1
Product Information
Product Information
Water Coolant Hose.
The OE Match Water Coolant Hose is a high-quality replacement cooling system component designed to transport engine coolant between key cooling system components while maintaining a sealed, pressurised circuit. Manufactured to OE specifications for fit, flexibility and durability, this coolant hose ensures efficient coolant circulation to help maintain the correct engine operating temperature under all driving conditions.  

Fits:
  • Porsche 95B.1 Macan Petrol 2.0L (237Bhp) 2014-18


Diagram Ref No 22

Constructed from premium-quality reinforced rubber with heat- and pressure-resistant materials, the hose is engineered to withstand continuous exposure to hot coolant, engine vibration and fluctuating operating pressures. Precision-moulded to match the original routing and connection points, it provides secure installation and reliable leak-free performance.  

What This Product Does:

  • Transfers coolant between engine cooling system components.
  • Maintains efficient coolant circulation throughout the cooling system.
  • Helps regulate engine operating temperature.
  • Supports effective heat transfer through the radiator.
  • Provides secure, leak-free coolant flow under pressure.
  • Works with the water pump, thermostat and radiator to optimise cooling.
  • Protects the engine from overheating.
  • Contributes to long-term engine reliability and performance.

Symptoms Of Wear Or Failure:
  • Coolant leaks around the hose or hose connections.
  • Low coolant level warnings.Engine overheating.
  • Cracks, splits or perishing of the hose material.
  • Swollen, soft or excessively hardened hose sections.
  • Coolant odour from the engine bay.
  • White or coloured coolant residue around the hose.
  • Bulging or collapsed hose under pressure.
  • Steam escaping from the engine compartment.
  • Reduced heater performance due to coolant loss or restricted flow.

Why Replacement Matters:
  • Coolant hoses operate under constant pressure and are continually exposed to high temperatures, engine vibration, coolant chemicals and environmental ageing. Over time, the rubber material can harden, crack, swell or lose its structural integrity, increasing the risk of coolant leaks or sudden hose failure.
  • A failed coolant hose can rapidly reduce coolant levels and compromise the engine's ability to regulate temperature. Continued driving with insufficient coolant circulation may result in severe engine overheating, potentially causing warped cylinder heads, head gasket failure and costly internal engine damage.
  • Replacing a worn or damaged coolant hose restores reliable coolant circulation and maintains the integrity of the engine cooling system. An OE Match replacement provides factory-style fitment, dependable sealing performance and long-lasting durability, helping preserve the performance, efficiency and reliability expected from your Porsche.



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

95B121056
95B121056

The product you are viewing cross references to these numbers
Water coolant pipe with coolant hose. Porsche 95B Macan - 94610605132, 94610605131, 94610605134, 94610605133
4
Water coolant pipe with coolant hose. Porsche 95B Macan
Special Order item
94610605134
Product Information
Product Information
Water coolant pipe with coolant hose. 



Fits:
Porsche 95B Macan  S 3.0ltr - 2014 to 2018
Porsche 95B Macan GTS 3.0ltr - 2014 to 2018
Porsche 95B Macan turbo 3.6ltr - 2014 to 2018

Click 'Zoom in' for large parts diagram.
Diagram ref no 9


Related reference numbers
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94610605134
94610605132
94610605131
94610605134
94610605133

The product you are viewing cross references to these numbers
Water coolant pipe with t-piece connector. Porsche 95B.1 Macan 2.0L - 95B121049E
2
Water coolant pipe with t-piece connector. Porsche 95B.1 Macan 2.0L
Special Order item
95B121049E
Product Information
Product Information
Water coolant pipe with t-piece connector.



Fits:
Porsche 95B.1 Macan 2.0L 2014-18

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

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

95B121049E
95B121049E

The product you are viewing cross references to these numbers
Water coolant pipe with t-piece connector. Porsche 95B.1 Macan 2.0ltr - 95B121049E - GPBH-12104
2
Water coolant pipe with t-piece connector. Porsche 95B.1 Macan 2.0ltr
95B121049E/1
Product Information
Product Information
Water coolant pipe with t-piece connector.  Engine Coolant Hose

Radiator hoses have an important job to transport your engines coolant to and from its cooling system components. Over time they can become dry, hard, brittle, or leak which warrants a replacement. When replacing we also recommend a coolant flush and replacement to remove any possible sludge formed over time.

Engine Coolant Hose Failure Symptoms

Cracking - Leaking - Swelling - Deterioration  

Fits:
Porsche 95B.1 Macan 2.0ltr -  2014 to 2018

Diagram ref no 12



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

95B121049E
95B121049E

The product you are viewing cross references to these numbers
Water hose. Porsche 958 Cayenne Diesel / 95B Macan Diesel / 970 Panamera Diesel - 95810645500
3
Water hose. Porsche 958 Cayenne Diesel / 95B Macan Diesel / 970 Panamera Diesel
Special Order item
95810645500
Product Information
Product Information
Water hose.



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

The product you are viewing cross references to these numbers
DISPLAYING 33 to 42 (of 42 products)
1 2 3
Also found on these pages
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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