Replace your brake fluid reservoir cap for improved pressure equalization and stunning appearance.

The RacingLine Brake Fluid Cap will hold your brake master cylinder at perfect pressure equalization to ensure that your high-performance braking system is performing perfectly.

Especially with big brake kits on track, rapid pad wear can create negative pressure in the master cylinder. Our replacement Brake Fluid Cap has a better pressure equalization system than the factory cap, ensuring zero pressure variance.

This is an engineered, billet replacement coolant cap to replace the cheap plastic one. Don’t confuse this RacingLine full replacement cap with other cheap covers - which simply stick on over the plastic cap. Your car deserves better than that.

As you’d expect from RacingLine, it’s meticulously machined with the latest CNC 5-axis technology. Each cap starts life as a solid billet of 6061 aerospace-grade aluminum. It’s then hand-polished, then gloss-anodized Midnight Black with laser-etched logos to stay beautiful year after year.