Goldenwrench BLACKLINE Performance Edition Washer Fluid Cap bmw carbon fiber A sporty 300 cell catalytic

A sporty 300 cell catalytic converter is integrated into the downpipe

4 ply silicone connectors & stainless steel t-bolt clamps included

2017 BMW M4 F83 convertible

When designing this new cooler

These are made utilizing OEM steering wheels

Goldenwrench BLACKLINE Performance Edition Washer Fluid Cap bmw carbon fiber A sporty 300 cell catalyticA must have addition in your engine bay! Introducing Goldenwrench's full replacement Billet Washer Fluid Cap for BMW E, F, & G Series vehicles! Built in with their no spill seal technology to solve for the leaking of washer fluid from the factory washer fluid reservoir. These are Goldenwrench's most complex pieces created to date. Meticulously designed and created in house to the highest precision and quality seen on our other products replacing the