Mercedes-Benz Cowl Vent Retainer 000-991-94-40 | C-Class, E-Class, GLE, Sprinter | 26029
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Push-type expansion rivet cowl retainer for Mercedes-Benz vehicles. Square 15mm × 15mm bottom head provides broad panel coverage, and the 17mm stem accommodates deeper panel stack-ups than standard cowl clips. Used across a wide range of Mercedes-Benz cars and vans. Replaces OEM part number 000-991-94-40.
Specifications
- Type: Push-type expansion rivet
- Material: Nylon
- Color: Black
- Bottom Head Size: 15mm × 15mm (square)
- Stem Diameter: 9mm
- Stem Length: 17mm
- Hole Size: 7mm
- Overall Length: 35mm
Vehicle Fitment
- Mercedes-Benz C-Class (2001–2021)
- Mercedes-Benz E-Class (2003–2023)
- Mercedes-Benz GLE / ML-Class (2006–2023)
- Mercedes-Benz S-Class (2000–2021)
- Mercedes-Benz Sprinter (2014–2024)
- Mercedes-Benz Vito (2014–2024)
Cross-Reference Numbers
- Mercedes-Benz OEM: 000-991-94-40
- SMS Part#: 26029
Will this fit my Mercedes-Benz C-Class?
Yes — OEM part number 000-991-94-40 is used across Mercedes-Benz C-Class models (W203, W204, W205) from 2001 through 2021 for cowl vent panel and body trim retention.
What is a "square head" expansion rivet?
A square head expansion rivet has a 15mm × 15mm flat square base that covers more surface area than a round head clip of the same size. The square footprint resists rotation in the panel hole and distributes pull-out force across four corners rather than a single round perimeter — ideal for locations that see vibration or thermal cycling.
What does "expansion rivet" mean?
An expansion rivet has a center pin that expands the clip legs when pressed. Inserting the clip into the 7mm hole and pressing the center pin outward locks the legs against the back of the panel. Unlike push-type clips that expand automatically, the separate pin gives more control over the clamping force and makes the clip reusable in many cases.
Does this fit the Mercedes-Benz Sprinter van?
Yes — the 000-991-94-40 is a general-purpose Mercedes-Benz expansion rivet used in the Sprinter (2014–2024) for interior trim, cowl vent, and body panel attachment. The 35mm overall length is particularly suited to the Sprinter's thicker panel assemblies.
How do I remove an expansion rivet without breaking it?
Use a small trim tool or pin punch to pop the center pin upward to its raised position — this retracts the legs. Then pull the rivet body straight out of the hole. If the pin is stuck, apply a small amount of penetrating oil around the head and wait a few minutes before retrying. Most rivets can be reused if removed carefully.