【Ensures Precise Cabin Temperature Control】 This heater control solenoid valve is essential for regulating the flow of hot coolant to your vehicle's heater core, ensuring accurate and responsive cabin temperature adjustment. It provides consistent heating for passenger comfort and efficient defrosting capabilities by controlling coolant flow based on your climate control settings. 【Guaranteed OEM Fit & Direct Replacement】 Engineered as an exact replacement for OEM part numbers 4H0-121-671-B and 4H0-121-671-D. This solenoid valve also seamlessly replaces 1J0-973-702, ensuring a perfect fit, correct electrical connections, and reliable performance that matches specifications for your vehicle's HVAC system. 【Specific Audi & Volkswagen Model Compatibility】 Designed for a wide range of Audi and Volkswagen models including Audi A3/A4/A5/A6/A7/A8/Q3/Q5/Q7/Q8/RS6/RS7 (2011-2020), Volkswagen Golf/GTI/Jetta/Tiguan/Atlas (2015-2022), and various other models. Please verify your vehicle's exact model, year, and trim to confirm compatibility before purchasing. 【Fast FBA】 This item is by Amazon (FBA), qualifying for fast and often FREE options. Benefit from quick, hassle-free customer service from Amazon's network. 【Reliability Backed by 1-Year Warranty】 We are confident in the quality and durability of our heater control solenoid valve. Your purchase is protected by a full 12-month warranty, ensuring long-term performance and your complete satisfaction. Replace Part Number: 4H0-121-671-D 4H0-121-671-B 4H0121671D 4H0121671B 1J0-973-702 1J0973702 Compatible with The Following Vehicles: Compatible with Volkswagen: Atlas 2018-2022 Atlas Cross Sport 2020-2022 Golf 2015-2018 Golf Alltrack 2017-2019 Golf R 2015-2019 Golf SportWagen 2015-2019 Golf GTI 2015-2021 Jetta 2019-2021 Tiguan 2018-2022 Compatible with Audi: A3 2015-2020 A3 Quattro 2015-2019 A4 2018-2019 A4 allroad 2018-2019 A4 Quattro 2018-2019 A5 Quattro 2018-2020 A5 Sportback 2018-2020 A6 2012-2018 A6 Quattro 2012-2018 A7 Quattro 2014-2018 A8 Quattro 2011-2020 allroad 2013-2016 Q3 2015-2018 Q3 Quattro 2015-2018 Q5 2013-2019 Q7 2013-2020 Q8 2019-2020 RS7 2014-2018 S3 2015-2020 S6 2013-2018 S7 2013-2018 S8 2013-2020 TT Quattro 2016-2019 TTS Quattro 2016-2018
