Engine Bay Caps for Crosstrek, Impreza and STI: Fit by Model

Start with your model and year, not the color

Billetworkz engine bay caps are direct factory replacements, so the set you order has to match your Subaru's model and generation. The finish is the fun part; fitment is the part that decides whether the caps go on at all. Check the year range on the product page against your car before you start comparing colors.

These sets are CNC machined from 6061 aluminum and finished with an anodized coating or powder coat depending on the color. That construction is what gives them the clean, custom look the brand describes, but it does not change the fit rule: the set must be listed for your model and year.

Which set fits which Subaru

The three sets below cover different models and cap counts. Use the included-cap list as a quick check of what you are replacing.

• Subaru Impreza 2012+: Billetworkz Engine Bay Caps - Subaru Impreza 2012+ includes oil, wiper fluid, coolant overflow and brake fluid caps. Four caps in one set.
• Subaru Crosstrek 2013+: Engine Bay Caps - Subaru Crosstrek 2013+ includes the same four caps: oil, wiper fluid, coolant overflow and brake fluid.
• Subaru STI 2015-2021: Engine Bay Caps Subaru STI 2015-2021 includes five caps: oil, wiper fluid, coolant overflow, brake fluid and power steering fluid. The extra cap is the main practical difference from the Impreza and Crosstrek sets.

Impreza and Crosstrek: four-cap sets

• Billetworkz Engine Bay Caps - Subaru Impreza 2012+: Billetworkz Engine Bay Caps - Subaru Impreza 2012+ is a direct factory replacement set with oil, wiper fluid, coolant overflow and brake fluid caps. If you drive a 2012 or newer Impreza, this is the set listed for your car, and the four-cap list tells you exactly what you are replacing.

  

• Engine Bay Caps - Subaru Crosstrek 2013+ (Wholesale): Engine Bay Caps - Subaru Crosstrek 2013+ includes oil, wiper fluid, coolant overflow and brake fluid caps. Crosstrek owners from 2013 on get the same four-cap coverage, so the choice between this and the Impreza set comes down to your model, not the cap count.

  

STI 2015-2021: the five-cap set

• Engine Bay Caps Subaru STI 2015-2021 (Wholesale): Engine Bay Caps Subaru STI 2015-2021 includes oil, wiper fluid, coolant overflow, brake fluid and power steering fluid caps. The power steering cap is the extra piece here. If your STI has that reservoir cap and you want a full matching set, this is the listing that covers it.

Color is a finish choice, not a fit choice

All three sets list the same color options: Black, Red, Blue, Silver (Raw), Neon Yellow, Hyper Teal, Red Wrinkle, White, Hyper Pink, Purple and Gold. The product records say the finish is anodized or powder coated depending on the color, so the color name is also a clue to the surface finish.

Pick a color that works with your engine bay rather than against it. A black or silver set blends in; a bright color makes the caps a feature. Neither choice changes compatibility, so you can decide this after you have confirmed the model and year.

Before you order, confirm these three things

• Your exact model and year: The Impreza set is listed for 2012+, the Crosstrek set for 2013+, and the STI set for 2015-2021. Match your car to the listing rather than assuming one Subaru set covers another.
• Which caps your car actually has: The STI set includes a power steering fluid cap that the Impreza and Crosstrek sets do not list. Check your engine bay against the included-cap list so you know what you are replacing.
• The color you want to live with: Eleven colors are listed across the sets. The finish type varies by color, so choose the look you want and treat the anodized or powder-coated finish as part of that choice.

What the records do not tell you

The supplied product information does not include step-by-step installation instructions or torque values. It describes the caps as direct factory replacements and asks whether you are ready to install a premium billet upgrade, but it does not spell out the procedure. If you are not confident removing and refitting caps on your engine bay, have a qualified technician handle the install.

The records also do not list individual cap dimensions or confirm fitment for models outside the stated year ranges. Treat the year range on each listing as the compatibility guide, and contact the store if your Subaru falls outside it.