Expansion Tank Hoses

Breather Line For Water Tank.

The Porsche Breather Line for Water Tank is a genuine Porsche cooling system component designed to vent excess air and pressure from the coolant expansion tank while maintaining the correct operating conditions within the cooling system. Manufactured to Porsche's exact specifications for fit, flexibility and durability, this breather line helps ensure efficient coolant circulation and stable cooling system performance.

Fits:

• Porsche 95B.1 Macan S Petrol 3.0L V6 (340Bhp) 2014-18
• 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 22

Constructed from high-quality, heat-resistant reinforced hose, the breather line is engineered to withstand continuous exposure to coolant vapour, engine heat, pressure fluctuations and vibration. Precision-moulded for factory-correct routing, it provides secure, leak-free connections and supports the proper operation of the coolant expansion tank and engine cooling system.  

What This Product Does:

• Vents air and coolant vapour from the coolant expansion tank.
• Helps regulate pressure within the cooling system.
• Maintains efficient coolant circulation.
• Supports proper filling and bleeding of the cooling system.
• Prevents air locks within the cooling circuit.
• Provides a secure, leak-free connection.
• Helps maintain stable engine operating temperatures.
• Forms an essential part of the engine cooling system.

Symptoms Of Wear Or Failure:

• Coolant leaks around the expansion tank.
• Visible cracks or splits in the hose.
• Coolant smell from the engine bay.
• Air entering the cooling system.
• Frequent coolant loss.
• Engine overheating.
• Coolant warning light or repeated low coolant warnings.
• White or coloured coolant residue around hose connections.
• Swollen, brittle or hardened hose material.
• Difficulty bleeding the cooling system after servicing.

Why Replacement Matters:

• The breather line is continually exposed to heat, coolant vapour, pressure changes and engine vibration. Over time, the hose material can harden, crack or lose flexibility, while connections may weaken, leading to coolant leaks or allowing air to enter the cooling system.
• A leaking or blocked breather line can disrupt pressure regulation within the coolant expansion tank, increasing the risk of air locks, coolant loss and engine overheating. Continued operation with a compromised cooling system can lead to reduced engine efficiency and potentially serious engine damage.
• Replacing a worn or damaged breather line restores the integrity of the cooling system and ensures the coolant expansion tank operates as designed. A genuine Porsche replacement provides factory-correct fitment, premium-quality materials and long-lasting reliability, helping maintain optimum engine temperatures, cooling efficiency and the dependable performance expected from your Porsche.

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

95B121447E

The product you are viewing cross references to these numbers

Breather Line For Water Tank.

The OE MATCH Breather Line for Water Tank is a cooling system component designed to vent excess air and pressure from the coolant expansion tank while maintaining the correct operating conditions within the cooling system. This breather line helps ensure efficient coolant circulation and stable cooling system performance.

Fits:

• Porsche 95B.1 Macan S Petrol 3.0L V6 (340Bhp) 2014-18
• 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 22

Constructed from high-quality, heat-resistant reinforced hose, the breather line is engineered to withstand continuous exposure to coolant vapour, engine heat, pressure fluctuations and vibration. Precision-moulded for factory-correct routing, it provides secure, leak-free connections and supports the proper operation of the coolant expansion tank and engine cooling system.  

What This Product Does:

• Vents air and coolant vapour from the coolant expansion tank.
• Helps regulate pressure within the cooling system.
• Maintains efficient coolant circulation.
• Supports proper filling and bleeding of the cooling system.
• Prevents air locks within the cooling circuit.
• Provides a secure, leak-free connection.
• Helps maintain stable engine operating temperatures.
• Forms an essential part of the engine cooling system.

Symptoms Of Wear Or Failure:

• Coolant leaks around the expansion tank.
• Visible cracks or splits in the hose.
• Coolant smell from the engine bay.
• Air entering the cooling system.
• Frequent coolant loss.
• Engine overheating.
• Coolant warning light or repeated low coolant warnings.
• White or coloured coolant residue around hose connections.
• Swollen, brittle or hardened hose material.
• Difficulty bleeding the cooling system after servicing.

Why Replacement Matters:

• The breather line is continually exposed to heat, coolant vapour, pressure changes and engine vibration. Over time, the hose material can harden, crack or lose flexibility, while connections may weaken, leading to coolant leaks or allowing air to enter the cooling system.
• A leaking or blocked breather line can disrupt pressure regulation within the coolant expansion tank, increasing the risk of air locks, coolant loss and engine overheating. Continued operation with a compromised cooling system can lead to reduced engine efficiency and potentially serious engine damage.
• Replacing a worn or damaged breather line restores the integrity of the cooling system and ensures the coolant expansion tank operates as designed.

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

95B121447E

The product you are viewing cross references to these numbers

Breather line for water tank.



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

Click 'Zoom in' for large parts diagram.
Diagram ref no 7

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

95B121447A

The product you are viewing cross references to these numbers

Breather line for water tank.



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

Click 'Zoom in' for large parts diagram.
Diagram ref no 7

Related reference numbers
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95B121447A

The product you are viewing cross references to these numbers

Coolant Hose, Water Tank To T-Piece.

The Coolant Hose – Water Tank to T-Piece is a OE MATCH cooling system component designed to connect the coolant expansion tank (water tank) to the T-piece junction within the cooling circuit. This hose ensures proper coolant flow between the reservoir and the main cooling system, helping maintain stable system pressure and temperature regulation.

Fits:

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

Diagram Ref No 10

What This Product Does:

• Connecting the expansion tank to the cooling circuit T-piece
• Allowing coolant circulation between the reservoir and system
• Maintaining proper cooling system pressure balance
• Supporting efficient coolant recovery and return flow
• Helping prevent air ingress into the cooling system

Symptoms Of Wear Or Failure:

• Coolant leaks near the expansion tank or T-piece junction
• Cracked, brittle, swollen, or softened hose material
• Coolant smell from the engine bay
• Low coolant warning light
• Gradual or unexplained coolant loss
• Visible coolant residue around hose connections
• Overheating if coolant loss becomes significant

Why Replacement Matters:

• Prevent sudden coolant leaks and breakdowns
• Maintain correct cooling system pressure
• Protect the engine from overheating damage
• Ensure proper coolant recovery and circulation
• Avoid costly repairs resulting from cooling system failure

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

95B121049A

The product you are viewing cross references to these numbers

Coolant hose. Water tank to t-piece.



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

Click 'Zoom in' for large parts diagram.
Diagram ref no 10

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

95B121049A

The product you are viewing cross references to these numbers

Coolant Pipe To Expansion Tank.

The Genuine Porsche Coolant Pipe to Expansion Tank is an original equipment cooling system hose designed to transfer engine coolant between the cooling system and the expansion tank on compatible Porsche models. Manufactured to Porsche's exact specifications for fit, flexibility and durability, this coolant pipe plays a vital role in maintaining correct coolant circulation, pressure regulation and coolant level management, helping to ensure optimum engine operating temperatures.

Fits:

• Porsche 95B.1 Macan S Diesel 3.0L V6 (258Bhp) 2014-18

Diagram Ref No 8

Manufactured from premium heat-resistant reinforced rubber and high-quality automotive materials, the coolant pipe is engineered to withstand continuous exposure to hot coolant, pressure fluctuations, engine vibration and repeated thermal cycling. Precision-moulded to match the original routing and connection points, it provides factory-correct fitment and reliable leak-free performance, making it the ideal replacement during cooling system repairs or preventative maintenance.  

What This Product Does:

• Transfers coolant between the engine cooling system and the expansion tank.
• Maintains correct coolant circulation and pressure.
• Supports the expansion and recovery of coolant during temperature changes.
• Helps regulate engine operating temperature.
• Prevents coolant loss through secure, leak-free connections.
• Works with the radiator, thermostat and water pump to maintain cooling system efficiency.
• Restores factory cooling system performance.
• Forms an essential part of the engine cooling system.

Symptoms Of Wear Or Failure:

• Coolant leaks around the hose or connections.
• Low coolant level requiring frequent topping up.
• Visible cracks, swelling or deterioration of the hose.
• Coolant residue around the expansion tank.
• Engine overheating.
• Sweet smell of coolant from the engine bay.
• Soft or collapsed coolant hose.
• Coolant warning light or low coolant message.
• Steam from the engine compartment caused by coolant leakage.
• Visible wear or damage to the hose ends.

Why Replacement Matters:

• The coolant pipe is continually exposed to hot coolant, internal pressure, engine vibration and repeated heating and cooling cycles. Over time, the hose material can harden, crack, swell or weaken, while the connection points may lose their sealing ability, increasing the risk of coolant leaks.
• A leaking or damaged coolant pipe can reduce coolant levels, allowing air to enter the cooling system and increasing the risk of engine overheating. Continued operation with insufficient coolant may lead to severe engine damage, including warped cylinder heads, failed head gaskets and premature wear of internal engine components.
• Replacing a worn or damaged coolant pipe with a Genuine Porsche component restores the integrity of the cooling system and ensures reliable coolant circulation. Manufactured to Porsche's exact engineering standards, the Genuine Coolant Pipe to Expansion Tank provides factory-correct fitment, exceptional durability and dependable long-term performance, helping to maintain the cooling efficiency, reliability and performance expected from your Porsche.

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

95B121049G

The product you are viewing cross references to these numbers

Coolant Pipe To Expansion Tank.

The OE MATCH Coolant Pipe to Expansion Tank is a cooling system hose designed to transfer engine coolant between the cooling system and the expansion tank on compatible Porsche models. This coolant pipe plays a vital role in maintaining correct coolant circulation, pressure regulation and coolant level management, helping to ensure optimum engine operating temperatures.

Fits:

• Porsche 95B.1 Macan S Diesel 3.0L V6 (258Bhp) 2014-18

Diagram Ref No 8

The coolant pipe is engineered to withstand continuous exposure to hot coolant, pressure fluctuations, engine vibration and repeated thermal cycling. Precision-moulded to match the original routing and connection points, it provides correct fitment and reliable leak-free performance, making it the ideal replacement during cooling system repairs or preventative maintenance.  

What This Product Does:

• Transfers coolant between the engine cooling system and the expansion tank.
• Maintains correct coolant circulation and pressure.
• Supports the expansion and recovery of coolant during temperature changes.
• Helps regulate engine operating temperature.
• Prevents coolant loss through secure, leak-free connections.
• Works with the radiator, thermostat and water pump to maintain cooling system efficiency.
• Forms an essential part of the engine cooling system.

Symptoms Of Wear Or Failure:

• Coolant leaks around the hose or connections.
• Low coolant level requiring frequent topping up.
• Visible cracks, swelling or deterioration of the hose.
• Coolant residue around the expansion tank.
• Engine overheating.
• Sweet smell of coolant from the engine bay.
• Soft or collapsed coolant hose.
• Coolant warning light or low coolant message.
• Steam from the engine compartment caused by coolant leakage.
• Visible wear or damage to the hose ends.

Why Replacement Matters:

• The coolant pipe is continually exposed to hot coolant, internal pressure, engine vibration and repeated heating and cooling cycles. Over time, the hose material can harden, crack, swell or weaken, while the connection points may lose their sealing ability, increasing the risk of coolant leaks.
• A leaking or damaged coolant pipe can reduce coolant levels, allowing air to enter the cooling system and increasing the risk of engine overheating. Continued operation with insufficient coolant may lead to severe engine damage, including warped cylinder heads, failed head gaskets and premature wear of internal engine components.

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

95B121049G

The product you are viewing cross references to these numbers

Water tank breather hose.



Fits:
Porsche 95B Macan S 3.0L
Porsche 95B Macan Turbo 3.6L

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

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

95B122447D

The product you are viewing cross references to these numbers

Water Tank Breather Hose.

The Water Tank Breather Hose is a OE MATCH cooling system component designed to vent air and regulate pressure within the coolant expansion tank (water tank). This hose allows excess air and vapour to escape safely, helping maintain stable cooling system pressure and efficient coolant circulation.

Fits:

• Porsche 95B.1 Macan S Petrol 3.0L V6 (340Bhp) 2014-18
• Porsche 95B.1 Macan Turbo 3.6L V6 (400Bhp) 2014-18

 
Diagram Ref No 9

What This Product Does:

• Allowing trapped air and vapour to vent from the expansion tank
• Maintaining correct cooling system pressure balance
• Preventing airlocks within the coolant circuit
• Supporting efficient coolant recovery and circulation
• Helping ensure stable engine temperature regulation

Symptoms Of Wear Or Failure:

• Coolant leaks near the expansion tank area
• Cracked, brittle, or weakened hose material
• Coolant smell from the engine bay
• Low coolant warning light
• Air in the cooling system after bleeding
• Fluctuating engine temperature readings
• Coolant residue around hose connections

Why Replacement Matters:

• Maintain correct cooling system pressure
• Prevent airlocks and coolant loss
• Protect the engine from overheating damage
• Restore efficient coolant circulation
• Avoid costly repairs caused by cooling system failure

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

95B122447D

The product you are viewing cross references to these numbers