The Goldenwrench Blackline Performance BMW F-Chassis Billet Washer Fluid Cap is a full replacement unit for the factory plastic washer fluid reservoir cap on compatible BMW F-Series vehicles. One of the most mechanically complex pieces in the Blackline Performance product line, this cap incorporates built-in no-spill seal technology — engineered to address washer fluid leakage from the factory reservoir cap during normal driving and spirited use. Designed and manufactured in-house to the same precision standards found across the Blackline cap range.
Each cap is CNC-machined from high-grade T6 aluminum and anodized in Edition Red. All logos and design details are created using a precision 3D milling process, machined directly into the aluminum surface for a permanent, high-definition finish. This is a full replacement unit — not a cover. It removes the factory plastic cap entirely and replaces it with the billet aluminum Blackline unit. Verify compatibility with the supported model list before purchasing.
Installation is straightforward, removing the factory cap and threading in the billet replacement in minutes. Each kit includes the billet washer fluid cap and an installation instruction card.
Product Details
- Full replacement billet T6 aluminum washer fluid cap — replaces factory unit entirely
- Built-in no-spill seal technology
- Anodized Edition Red finish
- 3D-milled Blackline Performance logos machined into cap surface
- Direct threaded replacement — no modification required
- Includes billet washer fluid cap and installation instruction card
Vehicle Applications
- BMW F22 / F23 2 Series
- BMW F87 M2
- BMW F30 / F31 / F34 3 Series
- BMW F80 M3
- BMW F32 / F33 / F36 4 Series
- BMW F82 / F83 M4
Notes
- This is a full cap replacement — the factory plastic washer fluid cap is removed entirely
- Designed for BMW F-Series vehicles; verify fitment using the supported model list above