Audi Cowl Retainer 8E0-805-121-A | A4 B6/B7, S4, RS4 | 21886
Steel slotted-drive cowl and splash shield retainer with integrated gasket for Audi A4, S4, and RS4 (B6/B7 platform). The steel construction handles higher torque than nylon, and the integrated gasket seals the mounting hole against water intrusion. Replaces OEM part number 8E0-805-121-A.
Specifications
| Spec | Detail |
|---|---|
| Type | Slotted-drive retainer with integrated gasket |
| Material | Steel |
| Color | Black |
| Width | 7mm |
| Length | 12mm |
| SMS Part# | 21886 |
Vehicle Fitment
| Make | Model | Years |
|---|---|---|
| Audi | A4 B6 (sedan & Avant) | 2002–2005 |
| Audi | A4 B7 (sedan & Avant) | 2006–2008 |
| Audi | RS4 B7 | 2007–2008 |
| Audi | S4 B6 | 2004–2005 |
| Audi | S4 B7 | 2006–2008 |
Cross-References
| Source | Part Number |
|---|---|
| Audi / VW OEM | 8E0-805-121-A |
| Auveco | 21886 |
| SMS Part# | 21886 |
South Mountain Supply stocks this OEM-spec Audi cowl retainer ready to ship. All quantities ship from our warehouse — no dropshipping delays.
Will this fit my Audi A4 B6?
Yes — this retainer fits the Audi A4 B6 from 2002 through 2005, including the sedan and Avant wagon body styles. It secures splash shields and cowl panels on the B6 platform.
Does this fit the Audi B7 platform?
Yes — the Audi A4, S4, and RS4 (B7, 2006–2008) use this same 8E0-805-121-A retainer for cowl and splash shield fastening. The B6 and B7 share this OEM part number.
Why is this retainer steel instead of nylon?
Steel construction is used when higher clamping force or resistance to heat is needed — common in engine bay and underbody locations where nylon may soften or crack over time. The steel body also allows the slotted driver to apply torque without stripping the head.
What does the integrated gasket do?
The gasket is a rubber or foam ring around the head that compresses against the panel surface when installed, creating a weather seal around the mounting hole. This prevents water and air from passing through, which is critical in splash shield and cowl locations.
How do I remove a steel cowl retainer?
Use a flathead screwdriver in the slotted head to back the retainer out. Steel versions are less likely to snap than nylon, but older units may seize due to corrosion. Apply penetrating oil (like PB Blaster) and allow it to soak for a few minutes before attempting removal.