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          Valeo 812255 - HVAC Heater Core

          MPN: 812255
          The Valeo 812255 HVAC Heater Core ensures optimal heat transfer for your Audi, keeping the cabin warm in cold weather. Designed for easy installation and reliable performance.
          0.0
          Vehicle Specific
          Check if this part fits your vehicle.
          • $139.95
          In stock

          Product Overview

          The Valeo HVAC Heater Core part number 812255 is engineered to meet or exceed OEM standards, providing a reliable and high-quality replacement component specifically designed for various Audi vehicles. This part is compatible with the OEM part number 8E1820031, ensuring a precise fit and dependable performance for your vehicle's heating system. One of the standout features of this heater core is its exceptional durability, constructed from premium-grade materials to withstand the rigors of daily use while delivering long-lasting performance. Choose Valeo 812255 for dependable performance and peace of mind every time you service your vehicle.

          Cross Reference Numbers

          This Valeo 812255 is equivalent to or replaces the following part numbers: 8E1820031, 92003, 99373

          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 S4 4.2 V8 (2003–2007)
          • Audi A4 1.8 L4 (2002–2007)
          • Audi A4 3.0 V6 (2002–2007)
          • Audi A4 2.0 L4 (2005–2007)
          • Audi A4 Quattro 3.2 V6 (2005–2007)
          • Audi A4 Quattro 3.0 V6 (2005–2007)
          • Audi S4 Cabriolet 4.2 V8 (2003–2007)
          • Audi A4 Cabriolet 1.8 L4 (2003–2007)
          • Audi A4 Cabriolet 3.0 V6 (2005–2007)
          • Audi A4 Quattro Avant 3.2 V6 (2006–2007)

          This may also fit other applications. Please use the vehicle selector tool to verify fitment.

          Why Shop at eEuroparts.com?

          • Proven Expertise: Over 25 years of experience with European vehicles means we know your car inside and out.
          • Exclusive Kits That Fitâ„¢ - complete repair solutions with no guesswork
          • 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 the Valeo 812255 HVAC Heater Core do?

          The heater core plays a crucial role in your vehicle's heating system. It is responsible for transferring heat from the engine's coolant to the air that enters the cabin, ensuring a warm and comfortable environment for passengers.

          How do I know if my HVAC Heater Core needs replacement?

          Common symptoms indicating the heater core may need replacement include insufficient cabin heat, coolant leaks inside the vehicle, and a sweet smell inside the cabin, often indicative of coolant leaking from the heater core.

          Can I install the Valeo 812255 myself?

          Installation is straightforward, making this heater core an ideal choice for both DIY enthusiasts and professional mechanics. However, proper precautions should be taken to ensure safety during the installation process.

          What are the symptoms of a faulty HVAC Heater Core?

          Symptoms of a faulty heater core include a lack of heat in the cabin, visible coolant leaks inside the vehicle, and an unusual sweet odor. If you experience any of these symptoms, it may indicate a failing heater core.

          Why should I choose Valeo for my HVAC Heater Core needs?

          Valeo is a trusted name in the automotive industry known for quality and reliability. Order Valeo 812255 today for a factory-correct replacement that restores safety and performance.

          Note: All information on this page and in the FAQ is for general reference only. Verify fitment and consult a professional as needed. eEuroparts.com is not responsible for incorrect part selection or installation.

            • eEuroparts SKU
              29026
            • Weight
              1.68 lbs
            • Dimensions (L x W x H)
              2.95 x 12.8 x 7.87 in
            • Barcode
              03276428122557
            • Manufacturer Part #
              812255
          • Brand
            Valeo
          • Manufacturer
            Valeo
          • MPN
            812255
          • Part Type
            HVAC Heater Core
          • OE Part Numbers
            8E1820031
          • Cross Reference Numbers
            92003, 99373
          • Features
            California Proposition 65 : WARNING: N/A for this product.
            California Proposition 65 : WARNING: N/A for this product.
            California Proposition 65 Image : www.P65Warnings.ca.gov
            California Proposition 65 Required : N
            Family : Valeo OE
          • Fitment
            • Fitment Type
              Vehicle Specific
          YearMakeModelSubmodelNotes
          2006AudiA4 QuattroAvant (3.2 V6 GAS)Notes: Valeo is the Original Equipment Manufacturer
          2006AudiA4 QuattroBase (3.2 V6 GAS)Notes: Valeo is the Original Equipment Manufacturer
          2006AudiA4 QuattroCabriolet (3.0 V6 GAS)Notes: Valeo is the Original Equipment Manufacturer
          2006AudiA4Base (2.0 L4 GAS)Notes: Valeo is the Original Equipment Manufacturer
          2006AudiA4Base (3.2 V6 GAS)Notes: Valeo is the Original Equipment Manufacturer
          2006AudiA4Cabriolet (1.8 L4 GAS)Notes: Valeo is the Original Equipment Manufacturer
          2006AudiS4Cabriolet (4.2 V8 GAS)Notes: Valeo is the Original Equipment Manufacturer
          2006AudiS4Base (4.2 V8 GAS)Notes: Valeo is the Original Equipment Manufacturer
          2006AudiS4Avant (4.2 V8 GAS)Notes: Valeo is the Original Equipment Manufacturer
          2004AudiS4Base (4.2 V8 GAS)Notes: Valeo is the Original Equipment Manufacturer
          2004AudiS4Avant (4.2 V8 GAS)Notes: Valeo is the Original Equipment Manufacturer
          2004AudiS4Cabriolet (4.2 V8 GAS)Notes: Valeo is the Original Equipment Manufacturer
          2004AudiA4Base (3.0 V6 GAS)Notes: Valeo is the Original Equipment Manufacturer
          2004AudiA4Cabriolet (1.8 L4 GAS)Notes: Valeo is the Original Equipment Manufacturer
          2004AudiA4Cabriolet (3.0 V6 GAS)Notes: Valeo is the Original Equipment Manufacturer
          2004AudiA4Base (1.8 L4 GAS)Notes: Valeo is the Original Equipment Manufacturer
          2005AudiA4Base (2.0 L4 GAS)Notes: Valeo is the Original Equipment Manufacturer
          2005AudiA4Base (3.0 V6 GAS)Notes: Valeo is the Original Equipment Manufacturer
          2005AudiA4Cabriolet (3.0 V6 GAS)Notes: Valeo is the Original Equipment Manufacturer
          2005AudiA4Cabriolet (1.8 L4 GAS)Notes: Valeo is the Original Equipment Manufacturer
          2005AudiA4Base (1.8 L4 GAS)Notes: Valeo is the Original Equipment Manufacturer
          2005AudiA4 QuattroCabriolet (3.0 V6 GAS)Notes: Valeo is the Original Equipment Manufacturer
          2005AudiA4 QuattroAvant (3.2 V6 GAS)Notes: Valeo is the Original Equipment Manufacturer
          2005AudiA4 QuattroAvant (3.0 V6 GAS)Notes: Valeo is the Original Equipment Manufacturer
          2005AudiA4 QuattroBase (3.0 V6 GAS)Notes: Valeo is the Original Equipment Manufacturer
          2005AudiA4 QuattroBase (3.2 V6 GAS)Notes: Valeo is the Original Equipment Manufacturer
          2005AudiS4Base (4.2 V8 GAS)Notes: Valeo is the Original Equipment Manufacturer
          2005AudiS4Cabriolet (4.2 V8 GAS)Notes: Valeo is the Original Equipment Manufacturer
          2005AudiS4Avant (4.2 V8 GAS)Notes: Valeo is the Original Equipment Manufacturer
          2003AudiA4Cabriolet (3.0 V6 GAS)Notes: Valeo is the Original Equipment Manufacturer
          2003AudiA4Base (3.0 V6 GAS)Notes: Valeo is the Original Equipment Manufacturer
          2003AudiA4Base (1.8 L4 GAS)Notes: Valeo is the Original Equipment Manufacturer
          2003AudiA4Cabriolet (1.8 L4 GAS)Notes: Valeo is the Original Equipment Manufacturer
          2002AudiS4Avant (2.7 V6 GAS)Notes: Valeo is the Original Equipment Manufacturer
          2002AudiS4Base (2.7 V6 GAS)Notes: Valeo is the Original Equipment Manufacturer
          2002AudiA4Base (3.0 V6 GAS)Notes: Valeo is the Original Equipment Manufacturer
          2002AudiA4Base (1.8 L4 GAS)Notes: Valeo is the Original Equipment Manufacturer
          2007AudiS4Base (4.2 V8 GAS)Notes: Valeo is the Original Equipment Manufacturer
          2007AudiS4Cabriolet (4.2 V8 GAS)Notes: Valeo is the Original Equipment Manufacturer
          2007AudiS4Avant (4.2 V8 GAS)Notes: Valeo is the Original Equipment Manufacturer
          2007AudiA4Base (3.2 V6 GAS)Notes: Valeo is the Original Equipment Manufacturer
          2007AudiA4Base (2.0 L4 GAS)Notes: Valeo is the Original Equipment Manufacturer
          2007AudiA4Cabriolet (2.0 L4 GAS)Notes: Valeo is the Original Equipment Manufacturer
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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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