Buy 2020 Audi TT RS Valve. Solenoid. Control. HVAC. Heater. 2.0 LITER. 2.5 LITER, REAR. 4.0 LITER LITER, REAR, Engine - OEM Audi Part # 4H0121670A (4H0-121-670-A, 4H0121670)

A Valve used to Control the flow of engine coolant to the Heater core. HVAC Heater Control Valve Solenoid. To Water Pump Housing Hose. Water.

HVAC Heater Control Valve SolenoidHVAC Heater Control Valve

Fits A8, Q7, RS3, RSQ8, S8, SQ7, SQ8, TT, TT RS, TTS

2.0 LITER. 2.5 LITER, REAR. 4.0 LITER, AUXILIARY, A8, A8L, AL8 SPORT, #2. 4.2 LITER, RETURN, REAR. ENGINE CODE: DNVB, REAR.
Heater Control Valve - Repair or Replace
A heater control valve diverts hot water (coolant, or antifreeze) from the radiator into the heater core in your vehicle’s cabin, resulting in soothing warm air. If your heat has stopped working, your 2020 Audi TT RS may require a replacement heater control valve.