Billet Brake Reservoir Cap - Black Anodized

Features:

• Direct replacement billet reservoir cap
• Not a cover, complete replacement cap
• CNC machined from solid billet aluminum
• Black anodized finish for clean look
• Includes new diaphragm seal
• Installs in seconds with no tools
• Improves engine bay appearance
• Compatible with 1999–2026 GM trucks
• Fits all Duramax engine variants
• Made in the USA

OEM Brake Master Cylinder Cap with Black Finish

If you're dialing in the details under the hood of your GM 2500/3500 truck, the Wehrli Billet Brake Reservoir Cap in Black Anodized is one of those small upgrades that makes a big visual impact. It replaces the factory plastic cap with a precision-machined billet aluminum piece that fits like OEM but adds a far more refined look. This isn’t just a decorative cover, it’s a full replacement cap that’s built to last. The black anodized finish gives it a clean, stealthy appearance while offering strong resistance to brake fluid, heat, and corrosion. It holds up just as well as it looks. Wehrli includes a brand-new diaphragm seal to ensure everything functions exactly as it should. Installation is quick and painless, no tools, no hassle. It’s a direct fit for 1999–2026 Silverado and Sierra HD trucks and works with all Duramax platforms.

Fits: 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026 GM 2500HD/3500HD

Notes:

• Direct replacement for OEM brake reservoir cap
• This is a complete cap, not just a decorative cover
• CNC machined from solid billet aluminum
• Black anodized finish resists brake fluid and corrosion
• Includes a new diaphragm seal for proper function
• Installs in seconds with no tools required
• Enhances engine bay aesthetics with a clean, custom look
• Compatible with 1999–2026 GM 2500HD and 3500HD trucks
• Fits all Duramax engine variants across those model years
• Made in the USA with high-quality materials