Heater hose supply. Porsche 944 1985-91  ❭  94457258701

Heater Hose Supply.
The OE Match Heater Hose Supply is a high-quality replacement cooling and heating system component designed to carry hot engine coolant from the engine cooling circuit to the vehicle's heater matrix. Manufactured to OE specifications for fit, durability and performance, this hose plays a critical role in providing efficient cabin heating while maintaining proper coolant circulation throughout the vehicle.

Fits:

• Porsche 944 2.5L 8V 1982-87
• Porsche 944 2.7L 8V 1988-89  

Diagram Ref No 25

Constructed from premium heat-resistant rubber materials, the heater supply hose is engineered to withstand continuous exposure to high coolant temperatures, pressure fluctuations and engine bay conditions. It provides a secure and reliable connection within the heating system, helping to ensure consistent climate control performance and cooling system efficiency.  

What This Product Does:

• Transfers heated engine coolant to the heater matrix.
• Supports efficient cabin heating performance.
• Maintains coolant circulation within the heating system.
• Helps regulate interior temperature control.
• Provides a secure and leak-resistant coolant pathway.
• Supports overall cooling system efficiency.
• Contributes to reliable HVAC system operation.

Symptoms Of Wear Or Failure:

• Coolant leaks around the hose or connections.
• Low coolant level warnings.
• Reduced or inconsistent cabin heating performance.
• Sweet coolant smell inside or outside the vehicle.
• Coolant residue around hose fittings.
• Visible cracking, splitting or swelling of the hose.
• Soft, brittle or deteriorated rubber material.
• Engine overheating caused by coolant loss.
• Moisture or coolant pooling beneath the vehicle.

Why Replacement Matters:

• Heater supply hoses operate in demanding conditions and are continuously exposed to hot coolant, pressure changes, vibration and environmental ageing. Over time, the rubber hose material can harden, crack, weaken or swell, increasing the risk of leaks and cooling system failure.
• A damaged heater hose can result in coolant loss, poor heater performance and reduced cooling system efficiency. If coolant levels drop significantly, the engine may overheat, potentially causing serious and costly engine damage. Even minor leaks can worsen over time and compromise vehicle reliability.
• Replacing a worn heater supply hose restores proper coolant flow, improves heating system performance and helps maintain correct engine operating temperatures. An OE Match replacement provides factory-style fitment, dependable durability and long service life, ensuring reliable operation of both the cooling and heating systems in your Porsche.

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

94457258701

The product you are viewing cross references to these numbers