Black Anodized Billet Oil Fill Tube Cap

Features:

• CNC machined billet aluminum construction
• Direct OEM replacement for easy install
• Complete cap, not just a cover
• Fits 2001-2026 GM Duramax diesel engines
• Available in clear or black anodized finish
• Helps clean up engine bay appearance
• Durable anodized coating for long life
• Made in the USA by WCFab
• Precision fit for factory oil fill tube

Dress Up Your Duramax With Quality You Can See

If you’ve ever popped the hood on your Duramax and noticed how the plastic oil fill cap looks completely out of place, this billet aluminum oil fill tube cap from Wehrli Custom Fabrication is exactly what you need. Designed as a true replacement, not just a cheap cover, this cap brings both style and durability to your engine bay. Precision CNC machined from high-quality billet aluminum and finished in sleek black anodizing, it’s built to last while giving your truck a clean, custom appearance. Whether you’re detailing your show rig or just want to replace a worn-out factory cap with something better, this piece fits the bill. Installation is quick and easy since it’s made to fit directly onto your factory oil fill tube without modification.

Built for Duramax Owners Who Appreciate the Details

This oil fill cap is compatible with all 2001-2026 GM Silverado and Sierra 2500HD and 3500HD models equipped with the 6.6L Duramax engine. Its durable anodized coating not only looks great but also helps resist corrosion and wear over time, making it ideal for daily drivers, tow rigs, or weekend toys. WCFab takes pride in machining these caps right here in the USA, ensuring every detail meets their high standards. Whether you choose to match it with other blacked-out accessories or let it stand out as a subtle upgrade, this billet oil fill cap is the perfect finishing touch for anyone who takes pride in their truck’s appearance and quality.

Fits: 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 Silverado/Sierra 2500HD/3500HD 6.6L Duramax