GMC Sierra HD Differential Cover - Rear - Wehrli - Fabricated Aluminum - Semi-Gloss Black - 20-25. Built for 2020-2025 GMC Sierra HD Duramax trucks, this rear cover delivers durable construction and a clean, OEM-like fit.

Crafted by Wehrli from fabricated aluminum and finished in a semi-gloss single-stage powder coat, this cover is a robust direct replacement for the stock unit. Stainless hardware fights corrosion, and the integrated drain plug simplifies fluid changes. The purposeful design provides strength without unnecessary weight, and the flat flange profile supports a dependable seal when paired with quality RTV or a gasket.

Features

• Fabricated aluminum construction
• Semi-gloss black single-stage powder coat
• Stainless hardware included
• Integrated drain plug
• Direct replacement for 2020-2025 GMC Sierra HD Duramax rear axle

Have questions or need guidance on your build? Call our team. We have locations in Austin, Texas and the Los Angeles, California area offering installation and customization services. Texas: 512-982-9393 California: 562-981-6800

Planning to purchase multiple items? Contact us to ask about shipping discounts. We install on premises at both locations.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov