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Billetworkz Engine Bay Caps - Subaru WRX 2015-2021 & 2022+
Regular price
$220.00
Sale price
$220.00
Regular price
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per
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Tired of a boring engine bay? Upgrade instantly with Billetworkz Engine Bay Caps.
The Problem: Crusty, faded factory caps are ruining your engine bay's look.
The Solution: Upgrade to a Billetworkz Engine Bay Cap Set!
These are direct factory replacements—CNC machined from 6061 aluminum and finished with a durable, vibrant anodized finish, or powder coated depending on the color. They offer a flawless fit and a clean, custom aesthetic that truly sets your Subaru apart.
Ready to trash the plastic and install a premium billet upgrade? Do it today!
2015-2021 & 2022+ WRX includes:
- Oil Cap
- Wiper Fluid Cap
- Coolant Overflow Cap
- Brake Fluid Cap
Why Choose Billetworkz?
At Billetworkz, we pride ourselves on delivering top-tier automotive accessories that blend performance with aesthetics. Our Engine Bay Caps are a testament to our commitment to quality and design excellence.
Materials
Materials
Specs
Specs
Installation Guide
Installation Guide
Processing Time
Processing Time
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.
High-quality engine bay caps with exceptional fitment and craftsmanship. Customers praised the "precision manufactured" design and custom color options. Easy installation, though one customer noted the coolant cap was "a bit too tight." The caps add visual appeal to the engine compartment. Outstanding customer service with quick turnaround times.
Some of the reviews shown are from related products the merchant grouped with this one.
T
Black
I got the whole kit. The billet caps look great! Just make sure to use gloves when taking them off and on. The edges are really sharp. But they fit perfectly!
V
Red Wrinkle
With billetworks plus carbon my engine look excellent 💪🏻🔥🔥🔥
V
Red Wrinkle
Let me upload a photo here, my car STI 2020
T
Black
The billet caps look awesome. But be very careful. Use gloves when you are removing and replacing them. The edges are very sharp and extremely hot! Just be aware of this when working under the hood.
A
Black
The caps look great under the hood. I got them to cut down on the bright yellow that the factory caps were. And the fit is perfect.
R
Silver (Raw)
Billetworkz is awesome! Great products and even better customer service.
M
Red
Looks great. Fits perfect.
D
These engine bay caps are very high quality. I got mine in wrinkle red. They are perfectly machined and looks amazing. They fit my 2020 BRZ absolutely perfect. Well worth the money. Don't hesitate in purchasing these caps. You will absolutely love them. Well done Billetworkz!
D
Red Wrinkle
These engine bay caps are very high quality. I got mine in wrinkle red. They are perfectly machined and looks amazing. They fit my 2020 BRZ absolutely perfect. Well worth the money. Don't hesitate in purchasing these caps. You will absolutely love them. Well done Billetworkz!
J
Red
Ordered oil and wiper fluid caps in red, to match my front strut bar and battery tie down. Fit was perfect. I was leary of the press on fit of the wiper fluid cap, but it's on there tight and stayed on. Looks so much nicer than the OEM yellow plastic. And they are stronger.
C
Absolutely love the engine bay caps and the material used to make them. From the original plastic caps to fully colored caps, it truly makes an aesthetic difference. This company is very responsive and professional, too!
T
Manual / Blue
Had to ditch the ugly yellow plastic caps and Billetworks has the best look. Easy install with only momentary confusion over the membrane on the brake fluid cap.
A
Red Wrinkle
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
Black
My 2024 Subaru Outback appreciates my new Billetworkz Engine Bay Caps.. They look great.
G
Red Wrinkle
Looks great. Brake fluid cap was a bit of a learning curve but wasn't too bad
M
Manual / Red Wrinkle
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
Manual / Red
Caps add a nice accent to the engine bay. Really love the way they look
W
Red Wrinkle
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
Red
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
Red
Great craftsmanship, perfect fit!
B
Great quality product. Thick piece of metal and easy installation. Paired with the dipstick. You get what you pay for.
