Introducing GoldenWrench's full replacement Billet Washer Fluid Cap for BMW E9X (3 Series) vehicles! Built in with GoldenWrench's 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 across GoldenWrench's other products, replacing the factory unit with an all new form factor.

Give the plain plastic factory cap an upgrade with the brand new BLACKLINE Performance Washer Fluid Cap. Each cap is CNC formed from T6 Aluminum and anodized in your choice of three colors: Anthracite Grey, Blue, or Red to complement the factory engine bay. All logos and decorations are finalized through GoldenWrench's precision 3D milling process, machined into each cap for the ultimate premium finish. The BLACKLINE Performance Billet Washer Fluid Cap will fit most BMW E9X Series model cars (please see application guide below). Each kit comes with the Billet Washer Fluid Cap and an Installation Instruction Card. This is a full replacement unit getting rid of the factory cap, installing easily in minutes.