Skip to content

Billetworkz Engine Bay Cap Set 2002-2007 WRX / 2004-2007 STI

$320.00
Original price $320.00 - Original price $320.00
Original price $320.00
$320.00 - $320.00
Current price $320.00
Only 1 Left In Stock! Usually Ships within 1-2 Business Days
Only 3 Left In Stock! Usually Ships within 1-2 Business Days
Only 2 Left In Stock! Usually Ships within 1-2 Business Days
Only 2 Left In Stock! Usually Ships within 1-2 Business Days
Only 3 Left In Stock! Usually Ships within 1-2 Business Days
Only 3 Left In Stock! Usually Ships within 1-2 Business Days
Only 1 Left In Stock! Usually Ships within 1-2 Business Days
Only 3 Left In Stock! Usually Ships within 1-2 Business Days
SKU BW-EBCZ-SUB-GD-BLK-E
Lease to own Pay as low as $/week

DETAILS

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!

2002-07 WRX/STI includes:

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

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.

    Why Billetworkz? 

    Billetworkz has become a go-to brand for Subaru owners who demand more than just performance—they demand personality. Proudly based in Pennsylvania, we’re a passionate crew of enthusiasts who live and breathe the automotive lifestyle. From the first prototype to the final polish, our parts reflect a deep understanding of what Subaru drivers truly want—function, feel, and a custom aesthetic that stands out. While other brands follow trends, Billetworkz carves its own path—earning the respect of some of the most detail-obsessed Subaru owners in the world.

    Weighted Shift Knobs – Feel Every Shift 

    For Subaru enthusiasts who demand more from every gear change, Billetworkz Weighted Shift knobs deliver the perfect balance of performance and style. Precision-machined from stainless steel, our knobs are designed to add weight where it matters—giving you smoother, more deliberate shifts and a connected driving experience. With dozens of finishes, engravings, and shapes like our popular Lightbulb, Piston, and Teardrop, there's a perfect knob for every build style—from daily driver to full send. Built in-house, made in small batches, and designed to feel as good as they look—this is where the shift starts.

    The Subaru Modding Essentials 

    We know the mod bug runs deep in the Subaru world; that’s why we built the essentials that elevate both form and function. Our Weighted Shift Knobs offer crisp, smooth and more connected shifts, while our engine bay caps and interior accessries clean up the bay and add that personal touch. Every part is machined from high-grade materials and built to last, designed specifically for your Subaru platform. Whether you're starting your first build or finishing off a full setup, Billetworkz makes sure the details never get overlooked.

    Billetworkz Custom 

    Transform your vehicle's interior with Billetworkz custom engraved shift knobs, meticulously crafted to your exact specifications. Our made-to-order shift knobs allow you to personalize every detail—from unique engravings and logos to custom colors and finishes. Experience truly personalized automotive craftsmanship with Billetworkz.


    Brand Logo
    About Billetworkz

    About Billetworkz

    At Billetworkz, every product is made in-house with Subaru drivers in mind. From Weighted Shift Knobs that improve your daily drive to Short Shifters that transform every gear change, our parts are crafted for those who crave precision and individuality behind the wheel. Whether you're building a show car or a weekend canyon carver, our Subaru-specific components, including engine bay dress-up kits and interior accessories, let you fine-tune every detail to your exact style. No outsourcing. No compromises. Just pure Subaru passion—machined into every piece.

    Style & Innovation

    Style & Innovation

    Subaru builds deserve more than just bolt-ons—they deserve innovation you can feel and style that turns heads. At Billetworkz, we obsess over every cut, curve, and finish to bring bold ideas to life for the Subaru community. Our shift knobs and accessories don’t just add flair—they’re engineered to enhance form and function, elevating every drive. Trusted by Subaru enthusiasts, track rats, and custom-builders alike, we set the standard for creative, high-performance detail without ever sacrificing craftsmanship.

    Shop By Vehicle