Goldenwrench BMW M Blackline Oil Cap Heritage Motorsport

The Goldenwrench BMW M Blackline Oil Cap – Heritage Motorsport Edition is engineered to elevate the engine bay of early 2000s BMW M vehicles with a refined OEM+ aesthetic and motorsport-inspired detailing. Designed in-house from the ground up, this full replacement oil cap reimagines the factory component with improved materials, precision machining, and a more purposeful visual presence. Manufactured from CNC machined T6 billet aluminum, each oil cap is finished in Goldenwrench’s signature Frozen Silver anodized coating for a clean, high-contrast appearance. The surface features the BLACKLINE Performance logo in a black infill process, complemented by subtle ghosted “G” logos that are 3D post-milled into the cap for a premium layered effect. This combination of materials and finishing ensures improved durability, resistance to heat, and long-term reliability compared to the factory plastic cap. Designed as a direct replacement, installation is straightforward and can be completed in minutes using the factory mounting location. This upgrade provides a simple yet highly effective way to enhance the visual quality of the engine bay while maintaining OEM fitment standards. Product Details • Designed and engineered in-house by Goldenwrench • CNC machined from T6 billet aluminum • Frozen Silver anodized finish • BLACKLINE Performance logo with black infill • 3D post-milled ghosted “G” logo detailing • Direct replacement for factory oil cap • Improved heat resistance and durability over OEM plastic cap • Simple installation with factory fitment Vehicle Applications • BMW M3 (E46) • BMW Z4 M (E85 / E86) • BMW M3 (E90) • BMW M3 (E92 / E93) • BMW M5 (E60) • BMW M6 (E63 / E64) Notes • Compatible with BMW engines S54, S65, and S85 • Replaces factory oil cap with BMW part number 11127832157 • Includes billet oil cap and installation instruction card