Genuine OEM N90872901 - Tire Valve Stem Cap

Product Overview

The Genuine OEM N90872901 tire valve stem cap is a factory-specification replacement for Audi vehicles spanning multiple generations and platforms. This small but essential component protects the valve stem from dirt, moisture, and corrosion, maintaining proper tire pressure integrity. Genuine OEM parts ensure exact fitment and factory durability standards across Audi D2, D3, D4, D5, B5, B6, B7, B8, C5, C6, C7, and C8 platforms from 2000 through 2026.

Vehicle Compatibility

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

• Audi A4 1.8 L4 Gas and 3.0 V6 Gas (B6, B7): 2002–2005
• Audi A4 Cabriolet 1.8 L4 Gas and 3.0 V6 Gas (B6): 2003–2006
• Audi A4 2.0 L4 Gas (B7): 2006–2008
• Audi A4 Avant 1.8 L4 Gas and 3.0 V6 Gas (B6, B7): 2003–2008
• Audi A6 3.0 V6 Gas and 3.2 V6 Gas (C5, C6): 2002–2008
• Audi A6 Avant 3.2 V6 Gas (C6): 2006–2008
• Audi A6 Quattro 2.0 L4 MHEV and 3.0 V6 MHEV (C8): 2020–2025
• Audi A6 allroad 3.0 V6 MHEV (C8): 2022–2024
• Audi A7 Sportback 3.0 V6 MHEV (C8): 2020
• Audi A8 Quattro 4.2 V8 Gas (D2, D3): 2000–2003
• Audi A8 Quattro L 4.2 V8 Gas and 6.0 W12 Gas (D3): 2008–2010
• Audi A8 Quattro L 3.0 V6 MHEV (D5): 2022
• Audi Allroad Quattro 2.7 V6 Gas and 4.2 V8 Gas (C5): 2002–2005
• Audi Q7 3.6 V6 Gas and 4.2 V8 Gas (4L): 2008–2010
• Audi Q7 3.0 V6 Gas and 3.0 V6 Diesel (4L): 2012
• Audi R8 4.2 V8 Gas and 5.2 V10 Gas (Typ42, Typ4S): 2014–2015
• Audi RS4 4.2 V8 Gas (B7): 2007–2008
• Audi RS5 Sportback 2.9 V6 Gas (B9): 2021, 2025
• Audi RS7 Sportback 4.0 V8 MHEV (C8): 2021–2022, 2024, 2026
• Audi RS7 4.0 V8 Gas (C7): 2016–2018
• Audi S4 4.2 V8 Gas (B6, B7): 2004–2008
• Audi S4 Cabriolet 4.2 V8 Gas (B6, B7): 2004–2009
• Audi S4 Avant 4.2 V8 Gas (B7): 2007–2008
• Audi S6 5.2 V10 Gas and 2.9 V6 MHEV (C6, C8): 2008, 2020, 2023–2024
• Audi S7 Sportback 2.9 V6 MHEV (C8): 2020–2022, 2024–2025
• Audi S8 5.2 V10 Gas and 4.0 V8 MHEV (D3, D5): 2007, 2025
• Audi e-tron Sportback BEV (GE): 2020–2021
• Audi e-tron S BEV and e-tron S Sportback BEV (GE): 2022–2023

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

Frequently Asked Questions

What is a tire valve stem cap and why do I need one?

A tire valve stem cap is a small threaded cover that protects the valve opening from dirt, moisture, and contaminants. Without it, debris can enter the valve mechanism, causing slow leaks or preventing proper tire pressure readings. Replacing a lost or damaged cap is a simple maintenance task that preserves tire integrity and fuel efficiency.

How do I know if my Audi needs a new valve stem cap?

Inspect your tire valve stems regularly. Signs that a cap needs replacement include visible damage, corrosion, cracks, missing caps, or caps that no longer seal tightly. If you notice a slow tire pressure loss on one wheel and the tire itself is not damaged, a faulty valve stem cap may be the culprit.

Is this a Genuine Audi part?

Yes. The N90872901 is a Genuine OEM Audi part, meeting factory specifications for fitment and durability. Using Genuine parts ensures exact compatibility across your Audi's valve stem and maintains the integrity of your tire pressure monitoring system.

How many valve stem caps do I need?

You typically need four caps, one for each tire. If you are replacing only a single lost or damaged cap, order one; if you want to refresh all four, order quantity 4.

Can I use aftermarket valve stem caps instead?

While many aftermarket caps are available, Genuine OEM parts guarantee exact fitment and material quality. Aftermarket caps may vary in thread pitch or seal quality. For peace of mind and warranty protection, Genuine OEM is the recommended choice.

Does this cap fit all Audi models?

This cap is designed for the Audi models listed in the Vehicle Compatibility section, spanning the D2, D3, D4, D5, B5, B6, B7, B8, C5, C6, C7, and C8 platforms from 2000 through 2026. Use the vehicle selector tool to confirm fitment for your specific year, model, and engine.

Order Genuine OEM N90872901 today. In-stock orders ship same or next business day from our U.S. warehouse, and our fitment team is one call away if you need help confirming the right part for your Audi.

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.