Dorman 926-851 Frame Crossmember Hole Plug

Frame Crossmember Hole Plug for GM Trucks

Dorman 926-851 is a black plastic frame crossmember hole plug made to seal exposed openings in the chassis. It helps block road salt, sediment, and moisture from collecting inside the frame, where corrosion can start and spread.

Compatible with Chevrolet Silverado and GMC Sierra applications, this specific-fit plug is shaped for the crossmember opening and supports a cleaner, more protected frame structure. The Dorman 926-851 is a practical replacement for worn, missing, or damaged crossmember plugs on GM full-size trucks.

Key Features

• Black plastic construction for chassis opening coverage
• Outside diameter: 76.5 mm
• Specific fit for the listed vehicle applications
• Helps seal frame crossmember openings from debris and moisture
• Designed for Chevrolet Silverado and GMC Sierra fitments

Detailed Description

This frame crossmember hole plug is used to close off exposed openings in the chassis crossmember so contaminants do not collect inside the frame. By limiting exposure to water, salt, and sediment, it helps reduce conditions that promote internal corrosion. Dorman 926-851 is a direct-fit style body hardware part for GM trucks that need a replacement plug in the crossmember opening.

Fits 1999-2017 Chevrolet Silverado 1500, N/A; Fits 1999-2017 Chevrolet Silverado 2500, N/A; Fits 2007-2017 GMC Sierra, N/A; Fits 1999-2017 GMC Sierra 1500, N/A; Fits 2007 Chevrolet Silverado 1500 Classic, N/A; Fits 2007 Chevrolet Silverado 1500 HD Classic, N/A; Fits 2007 GMC Sierra 1500 Classic, N/A; Fits 2007 GMC Sierra 1500 HD Classic, N/A; Fits 2005-2006 Chevrolet Silverado 1500 HD, N/A; Fits 2001-2003 Chevrolet Silverado 1500 HD, N/A; Fits 2005-2006 GMC Sierra 1500 HD, N/A; Fits 2001-2003 GMC Sierra 1500 HD, N/A; Fits 1999-2004 GMC Sierra 2500, N/A; Fits 1999 Chevrolet Silverado, N/A.

This part cross-references no listed interchange numbers for the same application.

Common Uses

• Replacing a missing frame crossmember plug
• Sealing an open chassis hole after plug damage
• Reducing buildup of road salt inside the frame
• Limiting sediment and moisture entry into crossmembers
• Addressing corrosion concerns in truck frame openings

Installation Notes

Inspect the crossmember opening before installation and remove dirt, rust flakes, or debris from the area. Confirm the opening diameter matches the plug size and verify the fitment against the vehicle listing before installation on Chevrolet Silverado or GMC Sierra models.

Quality Assurance

Dorman is a recognized aftermarket brand for replacement body hardware and chassis-related components. This plug is built as a specific-fit replacement for the listed GM truck applications.