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Genuine VW/Audi 8W0423831 - Rack and Pinion Bellows
Genuine VW/Audi Rack and Pinion Bellows 8W0423831 - For Audi Vehicles
Manufacturer Part Number: 8W0423831
Product Overview
The Genuine VW/Audi Rack and Pinion Bellows part number 8W0423831 is an essential component for maintaining the performance and longevity of your Audi's steering system. Engineered to OEM standards, this bellows provides superior protection for the rack and pinion assembly, guarding against dirt, dust, and debris that can compromise the integrity of your vehicle's steering.
Constructed from high-quality materials, the bellows features a seamless design that ensures durability and resistance to tearing or puncturing, making it a reliable choice for Audi enthusiasts and professionals alike. Installation is straightforward, requiring no professional assistance, and comes with all necessary hardware for a quick setup.
One of the key benefits of the Genuine VW/Audi Rack and Pinion Bellows is its ability to maintain proper lubrication within the steering system, thus preventing leaks and ensuring optimal functionality. This premium-grade component is a must-have for any Audi owner who prioritizes the performance and reliability of their vehicle.
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 SQ5 Sportback / 3.0V6, 2021-2022
- Audi RS5 Sportback / 2.9V6, 2021-2022
- Audi SQ5 / 3.0V6, 2021-2022
- Audi A4 allroad / 2.0L4, 2021-2022
- Audi A4 Quattro / 2.0L4, 2021-2022
- Audi A5 Quattro / 2.0L4, 2021-2022
- Audi A5 Sportback / 2.0L4, 2021-2022
- Audi S5 / 3.0V6, 2021-2022
- Audi S4 / 3.0V6, 2021-2022
- Audi RS5 / 2.9V6, 2021
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 Rack and Pinion Bellows protects the steering system's rack and pinion assembly from contaminants, ensuring that the mechanism remains lubricated and functions properly. It plays a crucial role in preventing leaks and maintaining optimal steering performance.
What vehicles is this part compatible with?
This part is compatible with various Audi models including the SQ5, RS5, A4 allroad, A5, S5, and S4 from model years 2021 to 2022. For exact fitment, please use the vehicle selector tool above.
What are common signs this part may need replacement?
Common signs of a failing bellows include visible cracks or tears in the rubber, leaking steering fluid, and increased steering noise or difficulty. Regular inspection can help identify these issues before they lead to more significant problems.
Are there any DTC (Diagnostic Trouble Codes) associated with this part?
For specific DTC information, consult professional repair documentation or experts, as there are no widely recognized OBD-II codes directly associated with the Rack and Pinion Bellows.
- BrandGenuine VW/Audi
- ManufacturerGenuine VW/Audi
- MPN8W0423831
- Part TypeRack and Pinion Bellows
- Fitment
- Fitment TypeVehicle Specific
| Year | Make | Model | Submodel | Notes |
|---|---|---|---|---|
| 2017 | Audi | A4 | Premium (2.0 L4 GAS) | |
| 2017 | Audi | A4 | Premium Plus (2.0 L4 GAS) | |
| 2017 | Audi | A4 | Prestige (2.0 L4 GAS) | |
| 2017 | Audi | A4 Quattro | Premium Plus (2.0 L4 GAS) | |
| 2017 | Audi | A4 Quattro | Prestige (2.0 L4 GAS) | |
| 2017 | Audi | A4 Quattro | Premium (2.0 L4 GAS) | |
| 2017 | Audi | A4 allroad | Premium Plus (2.0 L4 GAS) | |
| 2017 | Audi | A4 allroad | Premium (2.0 L4 GAS) | |
| 2017 | Audi | A4 allroad | Prestige (2.0 L4 GAS) | |
| 2018 | Audi | S4 | Premium Plus (3.0 V6 GAS) | |
| 2018 | Audi | S4 | Prestige (3.0 V6 GAS) | |
| 2018 | Audi | A4 allroad | Prestige (2.0 L4 GAS) | |
| 2018 | Audi | A4 allroad | Premium (2.0 L4 GAS) | |
| 2018 | Audi | A4 allroad | Premium Plus (2.0 L4 GAS) | |
| 2018 | Audi | SQ5 | Prestige (3.0 V6 GAS) | |
| 2018 | Audi | SQ5 | Premium Plus (3.0 V6 GAS) | |
| 2018 | Audi | S5 | Prestige (3.0 V6 GAS) | |
| 2018 | Audi | S5 | Premium Plus (3.0 V6 GAS) | |
| 2018 | Audi | RS5 | Base (2.9 V6 GAS) | |
| 2018 | Audi | A5 Quattro | Premium Plus (2.0 L4 GAS) | |
| 2018 | Audi | A5 Quattro | Prestige (2.0 L4 GAS) | |
| 2018 | Audi | A5 Quattro | Premium (2.0 L4 GAS) | |
| 2018 | Audi | A5 Sportback | Prestige (2.0 L4 GAS) | |
| 2018 | Audi | A5 Sportback | Premium Plus (2.0 L4 GAS) | |
| 2018 | Audi | A5 Sportback | Premium (2.0 L4 GAS) | |
| 2018 | Audi | S5 Sportback | Prestige (3.0 V6 GAS) | |
| 2018 | Audi | S5 Sportback | Premium Plus (3.0 V6 GAS) | |
| 2018 | Audi | A4 | Premium Plus (2.0 L4 GAS) | |
| 2018 | Audi | A4 | Premium (2.0 L4 GAS) | |
| 2018 | Audi | A4 | Prestige (2.0 L4 GAS) | |
| 2018 | Audi | A4 Quattro | Premium (2.0 L4 GAS) | |
| 2018 | Audi | A4 Quattro | Prestige (2.0 L4 GAS) | |
| 2018 | Audi | A4 Quattro | Premium Plus (2.0 L4 GAS) | |
| 2019 | Audi | A5 Quattro | Premium (2.0 L4 GAS) | |
| 2019 | Audi | A5 Quattro | Premium Plus (2.0 L4 GAS) | |
| 2019 | Audi | A5 Quattro | Prestige (2.0 L4 GAS) | |
| 2019 | Audi | A5 Sportback | Prestige (2.0 L4 GAS) | |
| 2019 | Audi | A5 Sportback | Premium (2.0 L4 GAS) | |
| 2019 | Audi | A5 Sportback | Premium Plus (2.0 L4 GAS) | |
| 2019 | Audi | A4 | Premium (2.0 L4 GAS) | |
| 2019 | Audi | A4 | Premium Plus (2.0 L4 GAS) | |
| 2019 | Audi | A4 | Titanium (2.0 L4 GAS) | |
| 2019 | Audi | A4 | Prestige (2.0 L4 GAS) | |
| 2019 | Audi | A4 Quattro | Premium (2.0 L4 GAS) | |
| 2019 | Audi | A4 Quattro | Prestige (2.0 L4 GAS) | |
| 2019 | Audi | A4 Quattro | Ultra sport (2.0 L4 GAS) | |
| 2019 | Audi | A4 Quattro | Premium Plus (2.0 L4 GAS) | |
| 2019 | Audi | A4 allroad | Premium Plus (2.0 L4 GAS) | |
| 2019 | Audi | A4 allroad | Prestige (2.0 L4 GAS) | |
| 2019 | Audi | A4 allroad | Premium (2.0 L4 GAS) | |
| 2019 | Audi | S5 Sportback | Prestige (3.0 V6 GAS) | |
| 2019 | Audi | S5 Sportback | Premium Plus (3.0 V6 GAS) | |
| 2019 | Audi | S5 | Premium (3.0 V6 GAS) | |
| 2019 | Audi | S5 | Prestige (3.0 V6 GAS) | |
| 2019 | Audi | S5 | Premium Plus (3.0 V6 GAS) | |
| 2019 | Audi | RS5 | Base (2.9 V6 GAS) | |
| 2019 | Audi | RS5 Sportback | Base (2.9 V6 GAS) | |
| 2019 | Audi | SQ5 | Premium Plus (3.0 V6 GAS) | |
| 2019 | Audi | SQ5 | Prestige (3.0 V6 GAS) | |
| 2019 | Audi | SQ5 | Premium (3.0 V6 GAS) | |
| 2019 | Audi | S4 | Premium (3.0 V6 GAS) | |
| 2019 | Audi | S4 | Premium Plus (3.0 V6 GAS) | |
| 2019 | Audi | S4 | Prestige (3.0 V6 GAS) | |
| 2020 | Audi | S5 Sportback | Premium Plus (3.0 V6 GAS) | |
| 2020 | Audi | S5 Sportback | Prestige (3.0 V6 GAS) | |
| 2020 | Audi | S5 Sportback | Premium (3.0 V6 GAS) | |
| 2020 | Audi | SQ5 | Prestige (3.0 V6 GAS) | |
| 2020 | Audi | SQ5 | Premium Plus (3.0 V6 GAS) | |
| 2020 | Audi | SQ5 | Premium (3.0 V6 GAS) | |
| 2020 | Audi | A4 allroad | Prestige (2.0 L4 GAS) | |
| 2020 | Audi | A4 allroad | Premium (2.0 L4 GAS) | |
| 2020 | Audi | A4 allroad | Premium Plus (2.0 L4 GAS) | |
| 2020 | Audi | S4 | Prestige (3.0 V6 GAS) | |
| 2020 | Audi | S4 | Premium Plus (3.0 V6 GAS) | |
| 2020 | Audi | S4 | Premium (3.0 V6 GAS) | |
| 2020 | Audi | A4 | Premium (2.0 L4 GAS) | |
| 2020 | Audi | A4 | Premium Plus (2.0 L4 GAS) | |
| 2020 | Audi | A4 | Prestige (2.0 L4 GAS) | |
| 2020 | Audi | A4 Quattro | Premium Plus (2.0 L4 GAS) | |
| 2020 | Audi | A4 Quattro | Ultra sport (2.0 L4 GAS) | |
| 2020 | Audi | A4 Quattro | Premium (2.0 L4 GAS) | |
| 2020 | Audi | A4 Quattro | Prestige (2.0 L4 GAS) | |
| 2020 | Audi | A5 Quattro | Premium (2.0 L4 GAS) | |
| 2020 | Audi | A5 Quattro | Premium Plus (2.0 L4 GAS) | |
| 2020 | Audi | A5 Quattro | Prestige (2.0 L4 GAS) | |
| 2020 | Audi | S5 | Prestige (3.0 V6 GAS) | |
| 2020 | Audi | S5 | Premium Plus (3.0 V6 GAS) | |
| 2020 | Audi | S5 | Premium (3.0 V6 GAS) | |
| 2020 | Audi | A5 Sportback | Premium (2.0 L4 GAS) | |
| 2020 | Audi | A5 Sportback | Prestige (2.0 L4 GAS) | |
| 2020 | Audi | A5 Sportback | Premium Plus (2.0 L4 GAS) | |
| 2021 | Audi | A4 allroad | Premium (2.0 L4 MHEV) | |
| 2021 | Audi | A4 allroad | Premium Plus (2.0 L4 MHEV) | |
| 2021 | Audi | A4 allroad | Prestige (2.0 L4 MHEV) | |
| 2021 | Audi | A4 Quattro | Premium (2.0 L4 MHEV) | |
| 2021 | Audi | A4 Quattro | Prestige (2.0 L4 MHEV) | |
| 2021 | Audi | A4 Quattro | Premium Plus (2.0 L4 MHEV) | |
| 2021 | Audi | A5 Quattro | Premium Plus (2.0 L4 MHEV) | |
| 2021 | Audi | A5 Quattro | Premium (2.0 L4 MHEV) | |
| 2021 | Audi | A5 Quattro | Prestige (2.0 L4 MHEV) |
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.




