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Porsche > Panamera 970 MK2 (2014-2016) > Engine Cooling > Coolant Hoses and Pipes >

Engine Block Hoses

Engine Block Hoses

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DISPLAYING 65 to 80 (of 91 products)
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Vent Hose. Porsche 970.2 Panamera 3.0L 2013-16 - 97010642260
2
Vent Hose. Porsche 970.2 Panamera 3.0L 2013-16
Special Order item
97010642260
Product Information
Product Information
Vent Hose.
The Vent Hose is a genuine Porsche OEM coolant vent/overflow hose designed to route coolant vapours and excess pressure within the engine cooling system. This connector hose helps maintain correct cooling system balance by directing overflow coolant back to the reservoir, supporting stable coolant circulation and consistent engine temperature control. Manufactured to Porsche specifications, it provides precise fitment, durability, and long-term resistance to heat and coolant exposure for Porsche Panamera (970) models.

Fits:
  • 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
  
Diagram Ref No 19 (Diagram Ref No 20 And 21 Included)

What This Product Does:

  • Routes coolant vapours and excess coolant back toward the coolant expansion/reservoir tank.
  • Helps maintain proper cooling system pressure balance during engine heating and cooling cycles.
  • Supports stable coolant circulation, helping prevent air pockets and pressure build-up.
  • Keeps the cooling system operating as a sealed, controlled loop to protect against coolant loss.

Symptoms Of Wear Or Failure:
  • Coolant may seep from cracks or loose connections, leaving dried residue or wet staining around the hose.
  • A leaking vent hose can cause gradual coolant loss, requiring frequent top-ups.
  • Improper venting may cause unstable system pressure, contributing to overheating or erratic temperature readings.
  • A noticeable coolant smell in the engine bay often indicates leakage from the vent/overflow line.
  • Common signs include cracking or splitting, brittle or hardened rubber, loose or damaged fittings, discoloration from coolant exposure.
  • Low coolant or temperature-related warnings may appear if the hose begins to fail.

Why Replacement Matters:
  • Prevents coolant leaks that can lead to low coolant levels and reduced cooling efficiency.
  • Maintains correct pressure balance within the cooling system during temperature changes.
  • Helps prevent overheating, since coolant loss or trapped air can disrupt proper circulation.
  • Protects surrounding components, as leaking coolant can damage hoses, sensors, wiring, and nearby engine parts.
  • Restores reliable cooling system operation, ensuring overflow coolant is routed correctly back to the reservoir.



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

97010642260
97010642260

The product you are viewing cross references to these numbers
Vent Hose. Porsche 970.2 Panamera 3.0L 2013-16 - 97010642260
2
Vent Hose. Porsche 970.2 Panamera 3.0L 2013-16
97010642260/1
Product Information
Product Information
Vent Hose.
The Vent Hose is a OE MATCH coolant vent/overflow hose designed to route coolant vapours and excess pressure within the engine cooling system. This connector hose helps maintain correct cooling system balance by directing overflow coolant back to the reservoir, supporting stable coolant circulation and consistent engine temperature control. It provides precise fitment, durability, and long-term resistance to heat and coolant exposure for Porsche Panamera (970) models.

Fits:
  • 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
  
Diagram Ref No 19

What This Product Does:

  • Routes coolant vapours and excess coolant back toward the coolant expansion/reservoir tank.
  • Helps maintain proper cooling system pressure balance during engine heating and cooling cycles.
  • Supports stable coolant circulation, helping prevent air pockets and pressure build-up.
  • Keeps the cooling system operating as a sealed, controlled loop to protect against coolant loss.

Symptoms Of Wear Or Failure:
  • Coolant may seep from cracks or loose connections, leaving dried residue or wet staining around the hose.
  • A leaking vent hose can cause gradual coolant loss, requiring frequent top-ups.
  • Improper venting may cause unstable system pressure, contributing to overheating or erratic temperature readings.
  • A noticeable coolant smell in the engine bay often indicates leakage from the vent/overflow line.
  • Common signs include cracking or splitting, brittle or hardened rubber, loose or damaged fittings, discoloration from coolant exposure.
  • Low coolant or temperature-related warnings may appear if the hose begins to fail.

Why Replacement Matters:
  • Prevents coolant leaks that can lead to low coolant levels and reduced cooling efficiency.
  • Maintains correct pressure balance within the cooling system during temperature changes.
  • Helps prevent overheating, since coolant loss or trapped air can disrupt proper circulation.
  • Protects surrounding components, as leaking coolant can damage hoses, sensors, wiring, and nearby engine parts.
  • Restores reliable cooling system operation, ensuring overflow coolant is routed correctly back to the reservoir.



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

97010642260
97010642260

The product you are viewing cross references to these numbers
Vent line. Porsche 970 Panamera - 97010631201
5
Vent line. Porsche 970 Panamera
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
Vent line. Porsche 970 Panamera - 97010631201 - 89692
3
Vent line. Porsche 970 Panamera
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

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

97010631201
97010631201

The product you are viewing cross references to these numbers
Water coolant hose return. Porsche 958 Cayenne / Panamera 970 - 94810605124, 94810605121, 94810605123
3
Water coolant hose return. Porsche 958 Cayenne / Panamera 970
Special Order item
94810605124
Product Information
Product Information
Water coolant hose - return.
This genuine OE hose routes coolant back to the engine’s cooling circuit, completing circulation from the engine back towards the overflow reservoir or cooling return path. It helps maintain correct engine temperature regulation by ensuring that coolant flows efficiently through the system, preventing overheating and supporting consistent thermal control under a wide range of driving conditions.

Fits:
Porsche 958 Cayenne S / GTS - 2010 to 2017
Porsche 970.1 Panamera 4 / 4S / GTS - 2009 to 2013
Porsche 970.2 Panamera GTS - 2014 to 2016

Diagram ref no 15

The Porsche Genuine OE Coolant Return Hose (Part No. 94810605124) is an original equipment engine cooling system hose assembly designed and manufactured to Porsche’s exact factory specifications. It’s a dedicated coolant return line (also referred to as a water return hose or coolant pipe) used in the closed-loop cooling system of specific Porsche V8 petrol engines.

This part has superseded the former numbers 94810605121, 94810605122, and 94810605123.

Coolant hoses endure thermal cycling, pressure variations, and exposure to antifreeze, which can lead to material degradation, swelling, cracks, and leaks over time. A failing coolant return hose can result in coolant loss, overheating, and potential engine damage. Replacing worn or deteriorated hoses with Genuine Porsche OE parts ensures correct dimensions, material resilience, and leak-free performance that aligns with factory cooling system specifications

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

94810605124
94810605124
94810605121
94810605123

The product you are viewing cross references to these numbers
Water coolant hose return. Porsche 958 Cayenne / Panamera 970 - 94810605124, 94810605121, 94810605123
3
Water coolant hose return. Porsche 958 Cayenne / Panamera 970
94810605124/1
Product Information
Product Information
Water coolant hose - return
OE Match replacement coolant line designed to replicate the original Porsche hose in shape, length, material, and fitment. It serves as a return path for coolant within the engine cooling system, helping maintain proper circulation and temperature regulation.

Fits:
Porsche 958 Cayenne S / GTS - 2010 to 2017
Porsche 970.1 Panamera 4 / 4S / GTS - 2009 to 2013
Porsche 970.2 Panamera GTS - 2014 to 2016

Diagram ref no 15

The return hose carries coolant back toward the radiator or engine block after it has passed through the engine and other cooling components. Proper coolant flow is vital for maintaining stable engine temperatures, preventing overheating, and ensuring long-term engine longevity. A worn, cracked, or leaking hose can compromise coolant flow, lead to coolant loss, introduce air into the system, and result in overheating or engine damage.

This OE Match hose fits directly in place of the original and is supplied without additional clamps or fittings, allowing reuse of existing hardware or replacement with recommended clamps as needed. It’s ideal for coolant system maintenance, restoration work, or replacing age-affected components.

The coolant return hose completes the coolant circulation loop by transporting coolant back to the radiator/engine assembly after passage through the engine or heat exchangers. This return path helps maintain stable coolant temperatures and supports continuous heat dissipation.

Function:
• Provides a return path for coolant in the engine cooling system
•  Maintains proper coolant circulation and temperature control
•  Resists heat, pressure, and coolant breakdown
•  Design for direct fit and correct routing
•  Durable construction for long-term service

Coolant hoses deteriorate over time due to heat cycling, pressure, and exposure to coolant and engine bay contaminants. Cracks, bulges, or soft spots can develop, leading to coolant leaks, engine overheating, air ingress, and reduced cooling performance. Replacing aging hoses with an OE Match coolant return hose restores proper fluid flow, maintains engine operating temperature, and helps protect against costly engine damage.

When to replace:
•  Visible cracks, swelling, or soft spots
•  Coolant leaks or crusty coolant residue
•  Engine overheating or temperature fluctuations
•  During major coolant service (water pump, thermostat, belt service)
•  Routine preventative maintenance for older hoses

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

94810605124
94810605124
94810605121
94810605123

The product you are viewing cross references to these numbers
Water coolant hose return. Porsche 970 Panamera - 94610605122, 94610605121
3
Water coolant hose return. Porsche 970 Panamera
Special Order item
94610605122
Product Information
Product Information
Water coolant hose - return

porsche

Fits:
Porsche 970.1 Panamera 3.6ltr- 2009 to 2013
Porsche 970.1 Panamera 4 3.6ltr - 2009 to 2013
Porsche 970.2 Panamera 3.6ltr - 2014 to 2016
Porsche 970.2 Panamera 4 3.6ltr - 2014 to 2016

Click 'Zoom in' for large parts diagram.
Diagram ref no 15



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

94610605122
94610605122
94610605121

The product you are viewing cross references to these numbers
Water coolant hose return. Porsche 970 Panamera - 94610605122, 94610605121
3
Water coolant hose return. Porsche 970 Panamera
94610605122/1
Product Information
Product Information
Water coolant hose - return

oematch

Fits:
Porsche 970.1 Panamera 3.6ltr- 2009 to 2013
Porsche 970.1 Panamera 4 3.6ltr - 2009 to 2013
Porsche 970.2 Panamera 3.6ltr - 2014 to 2016
Porsche 970.2 Panamera 4 3.6ltr - 2014 to 2016

Click 'Zoom in' for large parts diagram.
Diagram ref no 15



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

94610605122
94610605122
94610605121

The product you are viewing cross references to these numbers
Water coolant hose, return. Porsche 970 Panamera S / GTS / Turbo 4.8L - 97010640102
4
Water coolant hose, return. Porsche 970 Panamera S / GTS / Turbo 4.8L
Special Order item
97010640102
Product Information
Product Information
Water coolant hose, return.

porsche

Fits:
Porsche 970 Panamera S / GTS / Turbo 4.8L 2010-16

Click 'Zoom in' for large parts diagram.
Diagram ref no 34

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

97010640102
97010640102

The product you are viewing cross references to these numbers
Water coolant hose. Porsche 958 Cayenne 4.8L / 970 Panamera 4.8L - 94810645722
3
Water coolant hose. Porsche 958 Cayenne 4.8L / 970 Panamera 4.8L
Special Order item
94810645722
Product Information
Product Information
Water coolant hose.

porsche

Fits:
Porsche 958 Cayenne 4.8L 2011-18
Porsche 970 Panamera 4.8L 2010-16

Click 'Zoom in' for large parts diagram.
Diagram ref no 4

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

94810645722
94810645722

The product you are viewing cross references to these numbers
Water Coolant Hose. Porsche 958 Cayenne 4.8L / 970 Panamera 4.8L 2010-18 - 94810645722
2
Water Coolant Hose. Porsche 958 Cayenne 4.8L / 970 Panamera 4.8L 2010-18
94810645722/1
Product Information
Product Information
Water Coolant Hose.

The Water Coolant Hose is a OE MATCH engine coolant hose designed to carry pressurised coolant through the vehicle’s cooling system. This flexible hose helps maintain correct coolant circulation between key cooling components, supporting stable engine operating temperatures and reliable heater performance. It provides precise fitment and durability for Porsche 958 Cayenne and 970 Panamera 4.8L.

Fits:

  • Porsche 958 Cayenne S V8 4.8L Petrol 400HP 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
  • 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 970.2 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

Diagram Ref No 4 (Diagram Ref No 5 And 6 Sold Separately)

What This Product Does:
  • Transports engine coolant through the cooling circuit so heat can be carried away from the engine.
  • Helps maintain correct engine operating temperature by ensuring continuous coolant circulation.
  • Supports cabin heating, since hot coolant flowing through the heater circuit is what allows the heater core to produce warm air.
  • Provides a flexible connection that absorbs engine movement and thermal expansion without stressing rigid pipes or fittings.

Symptoms Of Wear Or Failure:
  • Coolant may drip or seep from the hose body or around the clamp connection points.
  • A leaking hose often causes gradual coolant loss, leading to frequent top-ups.
  • Loss of coolant or restricted flow can cause overheating or unstable engine temperatures.
  • A coolant leak typically produces a sweet smell around the engine bay or under the vehicle.
  • Signs include cracking, swelling/bulging, soft spots, hardened rubber, wet staining or coolant residue.
  • If coolant flow is compromised, the heater core may not receive enough hot coolant.
  • Modern Porsche models may display low coolant or overheating warnings when a hose begins to fail.

Why Replacement Matters:
  • Prevents coolant leaks that can quickly lead to low coolant levels and loss of system pressure.
  • Helps avoid engine overheating, which can cause severe and costly engine damage if ignored.
  • Restores proper coolant circulation, ensuring the cooling system works efficiently under all driving conditions.
  • Maintains reliable cabin heating, since heater performance depends on steady coolant flow.
  • Protects surrounding components, as leaking coolant can damage hoses, sensors, electrical connectors, and nearby engine parts.



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

94810645722
94810645722

The product you are viewing cross references to these numbers
Water hose return. Porsche 970 Panamera 3.6L - 97010650101
3
Water hose return. Porsche 970 Panamera 3.6L
Special Order item
97010650101
Product Information
Product Information
Water hose return.

porsche

Fits:
Porsche 970 Panamera 3.6L 2011-16

Click 'Zoom in' for large parts diagram.
Diagram ref no 34

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

97010650101
97010650101

The product you are viewing cross references to these numbers
Water hose return. Porsche 970 Panamera 3.6L - 97010650101
3
Water hose return. Porsche 970 Panamera 3.6L
97010650101/1
Product Information
Product Information
Water hose return.

oematch

Fits:
Porsche 970 Panamera 3.6L 2011-16

Click 'Zoom in' for large parts diagram.
Diagram ref no 34

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

97010650101
97010650101

The product you are viewing cross references to these numbers
Water hose supply. Porsche 970 Panamera 3.6L - 97010650201
3
Water hose supply. Porsche 970 Panamera 3.6L
Special Order item
97010650201
Product Information
Product Information
Water hose supply.

porsche

Fits:
Porsche 970 Panamera 3.6L 2011-16

Click 'Zoom in' for large parts diagram.
Diagram ref no 33

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

97010650201
97010650201

The product you are viewing cross references to these numbers
Water hose supply. Porsche 970 Panamera 3.6L - 97010650201
3
Water hose supply. Porsche 970 Panamera 3.6L
97010650201/1
Product Information
Product Information
Water hose supply.

oematch

Fits:
Porsche 970 Panamera 3.6L 2011-16

Click 'Zoom in' for large parts diagram.
Diagram ref no 33

Related reference numbers
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97010650201
97010650201

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Water hose, Supply. Porsche 970 Panamera Diesel - 97010640130
3
Water hose, Supply. Porsche 970 Panamera Diesel
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

Related reference numbers
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97010640130
97010640130

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DISPLAYING 65 to 80 (of 91 products)
<< 3 4 5 6
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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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