Billetworkz Clutch Fluid Reservoir Cap

2002–2014 Subaru WRX/STI, 2005–2009 Legacy GT, 2013–2021 & 2022+ BRZ/FRS/GT86 (Manual)

Part #: BW-EBCZ-SUB-CLU-PRP-E

Overview

The Billetworkz Clutch Fluid Reservoir Cap is a precision-engineered upgrade designed specifically for Subaru enthusiasts seeking to enhance both the appearance and durability of their vehicle’s engine bay. This high-quality replacement cap fits a wide range of Subaru models, including WRX/STI, Legacy GT, and BRZ/FRS/GT86 equipped with manual transmissions. Combining functional reliability with a sleek, minimalist design, it offers a subtle yet impactful aesthetic improvement that complements your Subaru’s performance heritage.

Ideal for drivers who appreciate attention to detail and want to maintain OEM-level functionality while adding a touch of custom style, this cap is a straightforward upgrade that elevates your engine bay’s look without compromising on quality or fitment.

Key Features

Engineered for durability and style, the Billetworkz Clutch Fluid Reservoir Cap offers the following key features:

• Machined from premium 6061-T6 billet aluminum for superior strength and longevity
• Available in multiple vibrant colors with corrosion-resistant anodized or powder-coated finishes
• Direct OEM replacement ensuring perfect fitment with no modifications required
• Minimalist design that enhances engine bay aesthetics with a clean, professional look
• Compatible with manual transmission models for precise clutch fluid reservoir sealing
• Resistant to heat and chemical exposure commonly found in engine compartments
• Lightweight construction that maintains vehicle performance without added bulk
• Designed and manufactured with attention to detail for consistent quality

Construction & Design

The Billetworkz Clutch Fluid Reservoir Cap is crafted from 6061-T6 billet aluminum, a material known for its excellent strength-to-weight ratio and corrosion resistance. This choice of material ensures the cap withstands the harsh conditions of the engine bay, including exposure to heat, moisture, and clutch fluid. The precision CNC machining process guarantees a perfect fit and finish, providing a seamless replacement for the factory cap.

Finishing options include anodizing or powder coating, both of which protect the cap from oxidation and wear while allowing you to personalize your engine bay with a range of vibrant colors. The cap’s minimalist styling complements the clean lines of Subaru engine compartments, making it an ideal upgrade for enthusiasts who value both form and function.

Installation & Fitment

Installation is straightforward and user-friendly, requiring no special tools or modifications. The Billetworkz Clutch Fluid Reservoir Cap is a direct replacement for the OEM cap, designed to fit securely on the clutch fluid reservoir of the following Subaru models:

• 2002–2007 Subaru WRX/STI
• 2008–2014 Subaru WRX/STI
• 2005–2009 Subaru Legacy GT
• 2013–2021 Subaru BRZ / Scion FRS / Toyota GT86 (manual transmission only)
• 2022+ Subaru BRZ / Toyota GR86 (manual transmission only)

This ensures compatibility across multiple generations, making it a versatile upgrade for many Subaru performance vehicles. Simply remove the existing OEM cap and replace it with the Billetworkz cap for an instant visual and quality enhancement.

What's Included

• Billetworkz Clutch Fluid Reservoir Cap (color and finish as selected)
• Installation instructions

Ideal For

This clutch fluid reservoir cap is perfect for Subaru owners who want to add a subtle yet distinctive touch to their engine bay. It suits enthusiasts who prioritize quality craftsmanship and durability while maintaining OEM-level reliability. Whether you are a daily driver, weekend warrior, or track enthusiast, this cap offers a simple upgrade that complements your vehicle’s performance and style.

Founded in 2014 by Austin Barnett, Billetworkz was born from a deep love for custom builds and the car community. With a Mechanical Engineering degree from Penn State, Austin brings a sharp eye for performance, precision, and personalization. His passion for cars started young—fueled by time spent with his father—and has only grown since. His iconic “Rexzilla” RB26 build is a true reflection of the craftsmanship and dedication behind everything we create at Billetworkz.