4H0121671D 4H0121671B Heater Control Valve Solenoid Fits for A3 A4 A5 A6 A7 A8 Q3 Q5 Q7 RS6 RS7 S6 S7 S8 TT TTS 2005-2018, Atlas Beetle Golf GTI Tiguan 2012-2018 Heater Control Water Valve

The heater control valve regulates coolant flow to the heater core, ensuring stable cabin temperature. Its solenoid-activated design enables quick adjustments, reduces energy waste, and prevents overheating. Built with heat-resistant materials, it withstands extreme temperatures, extending system lifespan and improving vehicle efficiency.Installation:Snap the heater control valve with connector into the vehicle’ s existing mounting points—no drilling or tools required.Compatibility:Fits for Audi A3 2015-2016A4 2013-2017A5 2012-2016A6 2005-2016A7 2012-2016A8 2010-2016Q3 2015-2018Q5 2010-2016Q7 2011-2018RS6 2010RS7 2014-2016S6 2013-2016S7 2013-2016S8 2013-2016TT 2016-2018TTS 2016Fits for Volkswagen Atlas 2018Beetle 2012-2016Golf 2015-2016GTI 2015-2018Tiguan 2018Part Number:4H0121671D, 4H0121671BSpecification:Material: High-strength heat-resistant plastic (UV-resistant, impact-absorbing)Mounting Location: Engine compartmentPackage Includes: 1 x heater control valveKey Features:1.Precision Control: Heater control valve solenoid adjusts coolant flow for consistent cabin temperature in extreme weather.2.Quick Setup: Pre-installed connectors enable tool-free installation for diyers or professionals.3.Durability: Resists wear, corrosion, and impacts for long-term reliability.4.Efficiency: Heater control water valve optimizes coolant flow, reducing energy waste and overheating risks.Notes:Verify Fitment: Cross-check your vehicle’ s OE part number or model year against the compatibility list before purchasing.Inspect Upon Delivery: Ensure the valve is intact and free from defects after unboxing

• 【High Compatibility】This heater control valve fits for Audi A3/ A4/ A5/ A6/ A7/ A8/ Q3/ Q5/ Q7/ RS6/ RS7/ S6/ S7/ S8/ TT/ TTS 2005-2018, fits for Volkswagen Atlas/ Beetle/ Golf/ GTI/ Tiguan 2012-2018 - Replaces - 4H0121671D 4H0121671B
• 【Precise Temperature Regulation】The heater control valve solenoid adjusts coolant flow through the heater core accurately. Maintains optimal cabin temperature in extreme weather, enhancing comfort and reducing engine wear
• 【Effortless Installation】Heater control valve with connector uses plug-and-play design. No tools or wiring required, ideal for diyers or mechanics needing quick, secure setup
• 【Long-Lasting Durability】Built from heat-resistant plastic, this control solenoid valve withstands high/low temperatures, corrosion, and impacts. Ensures long service life and cost savings
• 【Enhanced System Efficiency】The heater control water valve optimizes coolant flow for heating performance. Reduces energy waste and overheating risks, ensuring reliable operation year-round