GoldenWrench BMW M Car Series BLACKLINE Performance Expansion Tank Cap Cover Mirrors Each cap is CNC formed

Each cap is CNC formed from T6 Aluminum and anodized with an Anthracite Gray color to compliment the factory engine cover

Allen Key insert for easy install

Optimized Air Flow Design

and lend a polished appearance to your engine bay

1x Genuine Mercedes/Recaro Mounting Bracket

GoldenWrench BMW M Car Series BLACKLINE Performance Expansion Tank Cap Cover Mirrors Each cap is CNC formedThe follow up to our highly anticipated summer release (Billet Oil Cap Cover) is finally here for our all new BMW M Car Series Billet Coolant Expansion Tank Cap Cover! These are our most complex pieces created to date. Meticulously designed and created in house to the highest precision and quality seen on our other products giving the factory units an all new form factor. We bring to you the newest addition to the BLACKLINE Performance product line