Elevate Your Engine Bay Aesthetics with the Billetworkz Brake Fluid Reservoir Cap
Transform the look of your Subaru's engine bay with the Billetworkz Brake Fluid Reservoir Cap. Meticulously crafted for Subaru enthusiasts, this cap combines functionality with a sleek design, ensuring your vehicle stands out both on and off the road.
Precision Engineering:Machined from high-quality 6061-T6 billet aluminum for durability and a perfect fit.
Premium Finish:Available in multiple vibrant colors to match your personal style and resist corrosion in both anodized or powder coated based on selection.
Easy Installation:Direct replacement for the OEM Brake Fluid Reservoir Cap; no modifications required.
Enhanced Aesthetics: Designed to provide a minimalist yet striking appearance to your engine bay.
Fitment
2002-2007 WRX/STI
2008-2014 WRX/STI
2015-2021 & 2022+ WRX
2015+ STI
2013-2021 & 2022+ BRZ/FRS/GT86
2005-2009 Legacy GT
2009-2013 Forester XT
2014+ Forester
2015+ Outback
2013+ Crosstrek
2012+ Impreza
Why Choose Billetworkz?
At Billetworkz, we pride ourselves on delivering top-tier automotive accessories that blend performance with aesthetics. Our Brake Fluid Reservoir Cap is a testament to our commitment to quality and design excellence
Materials
CNC-machined from high-quality 6061-T6 billet aluminum
Finished with a durable powder coat for long-lasting color and protection
Designed to withstand high engine bay temperatures and resist corrosion
Smooth, precision-cut details for a clean, high-performance look
Specs
Type: Factory replacement caps – not covers
Fitment: Engine-specific designs for direct replacement of OEM caps
Available Cap Types (varies by listing):
Oil Cap
Coolant Overflow Cap
Brake Fluid Cap
Washer Fluid Cap
Power Steering Cap
Design:
Matches OEM threads and dimensions for secure fit
Engineered for both form and function – adds style without compromising performance
Pairs perfectly with other Billetworkz engine bay accessories for a cohesive look
Installation Guide
Installing your product is simple—and we’ve got you covered.
Most orders ship within 1–3 business days, but processing times can vary depending on inventory, color selection, and customization options.
Billetworkz Brake Fluid Reservoir Cap - Subaru (2002+)
$55.00
Engine Bay Aesthetic — Custom Colors & Finish Options
Choose from a variety of colors and finishes to match — or accent — your build. Swap out faded plastic caps for a sleek, custom look that sets your engine bay apart.
OEM-Fit, Direct Replacement Caps
Replaces your stock fluid caps — oil, coolant, brake, washer, and more — with full billet aluminum caps that screw in or snap in just like factory parts. No modifications needed.
Functional & Clean — Form Without Sacrifice
These caps maintain OEM threads and fitment tolerances, so you get upgraded looks without compromising function or safety. A clean, cohesive engine bay that still works as intended.
Great replacement caps. They all install easy. The coolant cap is a bit too tight. Requires a screwdriver to pop it off. Little sanding on the container fixed the issue! The color is a really nice. Pairs with my Subaru nicely!
E
Erik Graham
Amazing company
Every product I’ve got is perfect
E
Erik Graham
Amazing quality part
Amazing quality part. Looks way better than the stock ones
A
Alyssa Pallant
this truly are incredible quality!
this truly are incredible quality! billetworkz customer service is also fantastic! these are worth every penny and made such a difference in my build
A
Anonymous
Engine Bay Caps & Dip stick
Purchased the wrinkle red engine bay caps with the matching dipstick. Quality is top-notch, and the install was very simple and easy to follow. HIGHLY recommend for sprucing up your engine bay from those nasty oem yellow caps.
M
M Huff
Yellow plastic is gone...
My 2024 Subaru Outback appreciates my new Billetworkz Engine Bay Caps.. They look great.