Skip to content
Billetworkz - Dedicated to the Enthusiast
Skip to product information
1 of 116

Billetworkz Engine Bay Caps Subaru STI 2015-2021

Billetworkz Engine Bay Caps Subaru STI 2015-2021

Regular price $275.00
Sale price $275.00 Regular price
Shipping calculated at checkout.

These caps are designed to be factory replacement caps, not covers. CNC machined from 6061 aluminum and anodized for a durable and vibrant finish.

    2015+ STI Includes:

    • Oil Cap
    • Wiper Fluid Cap
    • Coolant Overflow Cap
    • Brake Fluid Cap
    • Power Steering Fluid Cap

      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.

      Watch Install Video Here:

      Watch on YouTube →

      Need More Help?

      View All Install Guides →

      Processing Time

      Most orders ship within 1–3 business days, but processing times can vary depending on inventory, color selection, and customization options.

      Billetworkz Engine Bay Caps Subaru STI 2015-2021

      $275.00



      Customer Reviews

      Based on 82 reviews
      98%
      (80)
      1%
      (1)
      0%
      (0)
      0%
      (0)
      1%
      (1)
      M
      Michael Lukach
      Love These Caps without Branding!

      I bought these because they look good with artistic logo for each fluid type, and don't have "Billetworkz" all over each cap as an advertisement. Much appreciated!

      Looks fantastic for reliving my 90s JDM street cars growing up. Red Powdercoat finish.

      B
      Billy Evers
      Nice touch to the bay

      Caps add a nice accent to the engine bay. Really love the way they look

      W
      Walt
      Awesome accessories!

      I just purchased the set of 5 caps in wrinkle red for my '19 WRX STI and they were very impressive. The material and the finish were outstanding, also very sturdy. I should have purchased the kit a long time ago. I'm very pleased with the product and the look.

      C
      Christopher E Piggott
      The added color makes the engine compartment pop!

      These caps look great, and the bright red (non wrinkle in my case) works really well against the rest of the engine compartment and the orange of my WRX. Don't mind that I added the Perrin oil filter cover (Billetworkz doesn't have one).

      The only minor thing I would change - and it's small - is that the marking on the oil fill cap doesn't orient square to the markings on the other caps, which you can turn any way you want. It's because it's a threaded cap. My guess is it could be fixtured to square up better when it's marked. But it still looks great, I'm just a little OCD.

      R
      Reco Ford
      Legacy GT Billetworkz engine caps

      Great craftsmanship, perfect fit!

      Scroll to the top of the page