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Porsche > Heating / Air Conditioning > Heater hoses & pipes >

HVAC Heater Control Valve. Porsche 955 / 957 / 958 / 9YA Cayenne / 95B / 95B.2 Macan  ❭  95557282405

HVAC Heater Control Valve. Porsche 955 / 957 / 958 / 9YA Cayenne / 95B / 95B.2 Macan - 95557282405, 95557282403 - A4122112
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Product Information
Product Information
HVAC Heater Control Valve.
The OE MATCH HVAC Heater Control Valve is a heating and climate control component designed to regulate the flow of engine coolant through the heater core on compatible Porsche models. This precision-engineered control valve ensures accurate temperature regulation within the passenger compartment by controlling the amount of hot coolant entering the heater matrix.  

Fits:
  • Porsche 955 Cayenne 3.2L V6 2003-06
  • Porsche 955 Cayenne S 4.5L V8 2003-06
  • Porsche 955 Cayenne Turbo 4.5L 2003-06
  • Porsche 955 Cayenne Turbo S 4.5L 2006>>
  • Porsche 957 Cayenne 3.0L Diesel 2007-10
  • Porsche 957 Cayenne 3.6L 2007-10
  • Porsche 957 Cayenne S / GTS 4.8L 2007-10
  • Porsche 957 Cayenne Turbo / Turbo S 4.8L 2007-10
  • Porsche 958 Cayenne V6 3.6L Petrol (300Hp) 2010-17
  • Porsche 958 Cayenne V6 3.0L Diesel (245Hp) 2010-17
  • Porsche 958 Cayenne S V6 3.0L Hybrid (380Hp) 2010-17
  • Porsche 958 Cayenne S V8 4.8L Petrol (400Hp) 2010-17
  • Porsche 958 Cayenne S V8 4.2L Diesel (382Hp) 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 9YA Cayenne V6 3.0L Petrol (340Hp) 2018-23
  • Porsche 9YA Cayenne Coupe V6 3.0L Petrol (340Hp) 2019-23
  • Porsche 9YA Cayenne E-Hybrid V6 3.0L V6 (340Hp) 2018-23
  • Porsche 9YA Cayenne Coupe E-Hybrid V6 3.0L (340Hp) 2020-23
  • Porsche 9YA Cayenne GTS V8 4.0L Petrol (460Hp) 2020-23
  • Porsche 9YA Cayenne Coupe GTS V8 4.0L Petrol (460Hp) 2021-23
  • Porsche 9YA Cayenne Turbo V8 4.0L Petrol (550Hp) 2020-23
  • Porsche 9YA Cayenne Coupe Turbo V8 4.0L Petrol (550Hp) 2019-23
  • Porsche 9YA Cayenne Turbo S E-Hybrid V8 4.0L (550Hp) 2019-23
  • Porsche 9YA Cayenne Coupe Turbo S E-Hybrid V8 4.0L (550Hp) 2020-23
  • Porsche 9YA Cayenne Coupe Turbo GT V8 4.0L (640Hp) 2021-23
  • Porsche 95B.1 Macan S Petrol 3.0L V6 (340Bhp) 2014-18
  • Porsche 95B.1 Macan S Diesel 3.0L V6 (258Bhp) 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
  • Porsche 95B.2 Macan Petrol 2.0L (245Bhp) 2019-21
  • Porsche 95B.2 Macan S Petrol 3.0L V6 (354Bhp) 2019-21
  • Porsche 95B.2 Macan GTS Petrol 2.9L V6 (380Bhp) 2019-21
  • Porsche 95B.2 Macan Turbo 2.9L V6 (440Bhp) 2019-21  

Diagram Ref No 1

The heater control valve is engineered to withstand continuous exposure to engine coolant, pressure fluctuations, high operating temperatures and repeated thermal cycling. Designed as a replacement, it integrates seamlessly with the vehicle's HVAC and engine cooling systems, providing correct operation and long-term reliability.  

What This Product Does:
  • Regulates the flow of engine coolant to the heater core.
  • Controls cabin heating performance.
  • Maintains accurate interior temperature regulation.
  • Supports efficient operation of the HVAC system.
  • Helps provide rapid cabin warm-up in cold conditions.
  • Works with the vehicle's climate control system for consistent comfort.
  • Forms an essential part of the vehicle's heating and cooling system.

Symptoms Of Wear Or Failure:
  • No cabin heat or insufficient heating.
  • Constant hot air from the vents regardless of temperature setting.
  • Inconsistent cabin temperature.
  • Coolant leaks around the heater valve.
  • Low engine coolant level caused by leakage.
  • Dampness or coolant residue around the valve.
  • Poor climate control performance.
  • Heater taking longer than normal to warm the cabin.
  • Engine coolant warning due to coolant loss.
  • Visible corrosion or damage to the valve body.

Why Replacement Matters:

  • The HVAC heater control valve operates continuously as part of the vehicle's climate control system, regulating hot coolant flow whenever the cabin temperature is adjusted. Over time, exposure to hot coolant, pressure changes and repeated operating cycles can cause the internal valve mechanism or seals to wear, seize or leak.
  • A faulty heater control valve can prevent the correct amount of coolant from reaching the heater core, resulting in poor cabin heating, inconsistent temperature control or coolant leaks. Continued operation with a leaking valve can lead to coolant loss, reduced engine cooling efficiency and potential engine overheating if left unresolved.



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