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          Genuine VW/Audi 4A0819809 - HVAC Heater Control Valve

          MPN: 4A0819809
          The Genuine VW/Audi 4A0819809 Heater Control Valve regulates coolant flow to ensure optimal cabin temperature. Designed for easy installation and reliable operation.
          0.0
          Vehicle Specific
          Check if this part fits your vehicle.
          • $50.74
          Out of stock

          Genuine VW/Audi Heater Control Valve 4A0819809 - For Audi Vehicles

          Manufacturer Part Number: 4A0819809

          Product Overview

          The Genuine VW/Audi HVAC Heater Control Valve part number 4A0819809 is a top-quality replacement designed specifically for your Audi vehicle's heating, ventilation, and air conditioning system. As an OEM part, it is manufactured to the highest standards, ensuring a perfect fit in place of your original component.

          This heater control valve plays a crucial role in your vehicle's HVAC system, regulating the flow of coolant to the heater core. This functionality allows you to adjust the temperature of the air coming from your car's vents, ensuring optimal comfort in all weather conditions.

          One of the standout features of this Genuine VW/Audi part is its durability. Constructed from premium-grade materials, it is designed to withstand extreme temperatures and offer long-lasting performance, even under constant use. Additionally, the straightforward installation process means you can replace your old or worn-out valve without any modifications to your Audi's existing system.

          In summary, if you are in need of a high-quality HVAC heater control valve, the Genuine VW/Audi part number 4A0819809 is an excellent choice that combines reliability, performance, and ease of installation.

          Vehicle Compatibility

          This part fits some of the popular models below. For Fitment Confidence, please use the vehicle selector tool above to verify exact compatibility.

          • Audi A6 2.8V6, 1995-1997
          • Audi A6 Quattro 2.8V6, 1995-1997
          • Audi A6 Avant 2.8V6, 1995-1997
          • Audi S6 2.2L5, 1995
          • Audi 100 CS 2.8V6, 1991-1994
          • Audi 100 S 2.8V6, 1991-1994
          • Audi 100 Quattro CS 2.8V6, 1991-1994
          • Audi S4 2.2L5, 1991-1994
          • Audi V8 Quattro 3.6V8, 1990-1991

          Why Shop at eEuroparts.com?

          Since 2000, eEuroparts.com has been a trusted destination for European car owners looking for reliable parts at great prices. Here's why customers choose us:

          • Proven Expertise: Over 25 years of experience with European vehicles means we know your car inside and out.
          • Fitment Confidence: Our accurate cataloging ensures you get the right part the first time.
          • Fast, Reliable Shipping: Orders ship quickly from our U.S.-based warehouses.
          • Transparent Pricing: Competitive prices with no hidden fees or surprise charges.
          • Established Trust: Serving the European auto community since 2000.

          Frequently Asked Questions

          What does this part do?

          The heater control valve regulates the flow of coolant to the heater core in your vehicle's HVAC system, allowing you to control the temperature of the air that comes from the vents. This is essential for maintaining comfort in varying weather conditions.

          What vehicles is this part compatible with?

          This heater control valve is compatible with several Audi models, including the A6, A6 Quattro, A6 Avant, S6, 100, and V8 Quattro from the years 1990 to 1997. Please use the vehicle selector tool to confirm fitment for your specific vehicle.

          What are common signs this part may need replacement?

          Common signs that your heater control valve may need replacement include:

          • Inconsistent cabin temperature
          • Unusual coolant leaks
          • Heater not functioning properly
          • Dashboard warning lights related to HVAC

          Are there any DTC (Diagnostic Trouble Codes) associated with this part?

          Consult with professional repair documentation or experts to confirm diagnosis for specific DTCs related to HVAC issues. Commonly known codes may include P0128 for thermostat issues, which can relate to temperature regulation within the HVAC system.

            • eEuroparts SKU
              1418328
            • Manufacturer Part #
              4A0819809
          • Brand
            Genuine VW/Audi
          • Manufacturer
            Genuine VW/Audi
          • MPN
            4A0819809
          • Part Type
            HVAC Heater Control Valve
          • Fitment
            • Fitment Type
              Vehicle Specific
          YearMakeModelSubmodelNotes
          1992Audi100CS (2.8 V6 GAS)
          1992Audi100S (2.8 V6 GAS)
          1992Audi100Base (2.8 V6 GAS)
          1992Audi100 QuattroCS (2.8 V6 GAS)
          1992AudiS4Base (2.2 L5 GAS)
          1992AudiV8 QuattroBase (4.2 V8 GAS)
          1993Audi100CS (2.8 V6 GAS)
          1993Audi100Base (2.8 V6 GAS)
          1993Audi100S (2.8 V6 GAS)
          1993Audi100 QuattroCS (2.8 V6 GAS)
          1993AudiS4Base (2.2 L5 GAS)
          1993AudiV8 QuattroBase (4.2 V8 GAS)
          1994Audi100S (2.8 V6 GAS)
          1994Audi100CS (2.8 V6 GAS)
          1994Audi100 QuattroCS (2.8 V6 GAS)
          1994AudiS4Base (2.2 L5 GAS)
          1994AudiV8 QuattroBase (4.2 V8 GAS)
          1995AudiA6Avant (2.8 V6 GAS)
          1995AudiA6Base (2.8 V6 GAS)
          1995AudiA6 QuattroBase (2.8 V6 GAS)
          1995AudiA6 QuattroAvant (2.8 V6 GAS)
          1995AudiS6Base (2.2 L5 GAS)
          1995AudiS6Avant (2.2 L5 GAS)
          1996AudiA6Avant (2.8 V6 GAS)
          1996AudiA6Base (2.8 V6 GAS)
          1996AudiA6 QuattroBase (2.8 V6 GAS)
          1996AudiA6 QuattroAvant (2.8 V6 GAS)
          1997AudiA6Base (2.8 V6 GAS)
          1997AudiA6Avant (2.8 V6 GAS)
          1997AudiA6 QuattroAvant (2.8 V6 GAS)
          1997AudiA6 QuattroBase (2.8 V6 GAS)
          1990AudiV8 QuattroBase (3.6 V8 GAS)Notes: From Chassis/VIN 4CM003559
          1991AudiV8 QuattroBase (3.6 V8 GAS)Notes: From Chassis/VIN 4CM003559
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          Warranty Overview

          At eEuroparts, we stand behind the quality of the products we sell. Every part we offer is backed by a warranty designed to give you peace of mind and protect your investment.

          Standard Warranty – Most Parts

          • Coverage: 2 years or 24,000 miles (whichever comes first) from purchase date.

          • Protection: Defects in materials or workmanship under normal personal use.

          • Eligibility: Applies only to the original purchaser and the vehicle where the part was first installed.

          • Exclusions:

            • Wear-and-tear items (brake pads, filters, bulbs, wipers, etc.)

            • Commercial, fleet, rideshare, off-road, or racing use

            • Improper installation, misuse, accidents, or modifications

          • Not Covered: Labor, shipping, towing, or incidental costs.

          Bison Performance Warranty – Our House Brand

          • Coverage: Limited Lifetime Warranty for as long as you own your vehicle.

          • Applies To: All products sold under the Bison Performance label.

          • Premium Protection: Goes beyond our standard warranty — if it’s a Bison product, the 2-year/24k mile limit is replaced with lifetime coverage.

          • Exclusions: Same as the standard warranty (normal wear, commercial use, improper installation, etc.).

          • What’s Included: Replacement of the defective product (labor and shipping excluded).

          Warranty Claim Requirements

          To keep claims fast and fair, we require:

          • Proof of purchase (invoice or order confirmation).

          • Photos or videos showing the defective part, order number, date, VIN, and odometer reading.

          • Diagnostic reports or part returns for non-visible issues may be requested.

          • Claims must be truthful, properly documented, and reflect normal consumer use.

          Buy With Confidence: We back our products because we believe in their quality, with a transparent, customer-first warranty process you can trust. And with Bison Performance products, you’ll enjoy Limited Lifetime protection—an assurance few brands can match.

          For full details and exclusions, please see our complete Warranty Terms & Conditions.

          This summary is for convenience only. For full warranty coverage details, exclusions, and requirements, see our official Warranty Terms & Conditions. In case of conflict, the full policy governs.

          Return Policy Overview

          Most parts can be returned within 30 days of delivery if unused, uninstalled, and in original packaging.
          To start a return, contact customer support via Chat or Contact Us.

          • Restocking fee: Up to 20% may apply for certain orders (buyer’s remorse, order errors, or special-order items)

          • Refunds: Issued to your original payment method within 3–5 business days after inspection

          • Exchanges: Not automatic — please return and reorder

          • Replacements: May be approved for incorrect or defective items reported within 7 days

          Not returnable:

          • Used or installed parts

          • Electrical components

          • Opened filter kits, gaskets, or contaminated items

          • Final sale or custom orders

          Important Notes:

          • Return shipping is your responsibility unless we made a verified error

          • Fitment is the customer’s responsibility (we can assist, but do not guarantee)

          • Country of origin may vary and is not grounds for return

          For complete details, please see our full Return Policy.


          This Returns summary is provided for convenience only. All returns, refunds, and exchanges are subject to the complete Returns Policy. In the event of any conflict, the full policy governs.

          Fast, Reliable Shipping — Straight to Your Door

          We ship most orders the same day when placed before 2 PM CST (Monday–Friday). Our main warehouse is just east of Nashville, TN, and we also ship from multiple locations nationwide to get your order to you as quickly as possible.

          • We use trusted carriers like UPS, FedEx, and USPS.

          • Tracking info is emailed to you as soon as your order ships.

          • Delivery estimates at checkout are based on carrier data, but not guaranteed.

          Need help with a shipment?

          If your order is missing, damaged, or incorrect, just let us know within 5 days of delivery. We’ll walk you through the quick claim process — including a few photos to help us make things right.

          For complete details, please see our full Shipping Policy.


          This Shipping summary is provided for convenience only. Delivery times, carrier terms, fees, restrictions, risk of loss, and other details are governed by our complete Shipping Policy. In the event of any conflict, the full policy governs.

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