Billetworkz Engine Bay Caps - Subaru WRX 2015-2021 & 2022+

Upgrade your WRX engine bay from tired plastic to premium billet. The Billetworkz Engine Bay Cap Set replaces the crusty, faded factory caps with CNC-machined 6061 aluminum pieces finished in vibrant, durable coatings for a clean, custom look that matches the rest of your build.

Key Features

• CNC-Machined 6061 Aluminum: Precision fit and long-term durability.
• Premium Finishes: Anodized or powder coated (finish type varies by color) for color depth and protection.
• Direct Replacements: Designed to install in place of the factory caps with OEM-style fitment.
• Cohesive Aesthetic: Instantly elevates the engine bay with a unified billet look.

Set Contents (Both Generations)

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

Why We Like It

It’s a fast, high-impact refresh. These caps replace the most visible plastics with precise, color-stable billet pieces that make your bay look purposeful and well-finished.

Specifications

• Material: 6061 aluminum, CNC-machined
• Finishes: Anodized or powder coated (depending on color)
• Design: Vehicle-specific, direct replacement

Installation Notes

• Install with the engine cool and on level ground.
• Remove OEM caps and seat each Billetworkz cap per its location; ensure seals/O-rings (where applicable) are clean.
• Hand-tighten oil cap; do not over-torque.
• After first heat cycle, verify caps remain secure and leak-free.

What’s in the Box

• (1) Oil Cap
• (1) Wiper Fluid Cap
• (1) Coolant Overflow Cap
• (1) Brake Fluid Cap

About Billetworkz

With more than a decade of innovation and in-house machining, Billetworkz delivers precision-engineered accessories that blend form and function—building on a legacy that began with their foundational shift knobs.

Compatibility & Disclaimers

Designed for the listed WRX applications. Finish color may vary slightly due to anodizing/powder coat processes and screen differences. Always follow OEM procedures when servicing fluid systems.