Dorman 911-572 Fuel Pump Tank Seal

Fuel Pump Tank Seal for OE-Style Fit

Dorman 911-572 is a fuel pump tank seal built to match the fit and function of the original seal on specified vehicles. Made from black rubber with a static O-ring sealing surface, it is sized for flange-style fuel sender and fuel pump tank applications where a secure seal is critical.

This fuel pump tank seal is a direct-fit option for many GM trucks, SUVs, and cars, including Chevrolet Silverado, GMC Sierra, and Chevrolet Tahoe applications that use a flange style O-ring seal. The Dorman 911-572 part number is also a useful reference when cross-shopping OE-style replacements for fuel tank service.

Key Features

• Rubber construction for sealing durability
• Black O-ring seal with static sealing surface type
• Designed to match original fit and function on specified vehicles
• Oval rim shape with 3.48 inside diameter and 3.93 outside diameter
• Fits flange style O-ring seal applications
• Compatible with many Chevrolet, GMC, Buick, Cadillac, Pontiac, Oldsmobile, and Hummer models

Detailed Description

Dorman 911-572 is engineered as a fuel sender O-ring for the tank opening where the fuel pump module or sender assembly mounts. Its rubber material, 0.12 thickness, and OE-style dimensions help maintain a proper seal at the tank flange, reducing the risk of vapor or fuel seepage at the service point. This part number is commonly searched for Chevrolet Silverado 1500, GMC Sierra 1500, and Chevrolet Tahoe fuel pump tank seal replacement jobs, as well as other GM applications listed in the fitment data.

This part cross-references Spectra Premium LO185 for the same application.

What It Is Used For

• Replacing a worn fuel pump tank seal during fuel sender service
• Addressing fuel odor around the tank flange
• Correcting seepage at the fuel pump module mounting surface
• Restoring a proper seal after tank or sender removal
• Supporting maintenance on GM fuel tank assemblies

Installation Notes and Tips

• Clean the tank flange and sealing surface before installation.
• Inspect the sender flange and tank opening for nicks, corrosion, or distortion.
• Confirm the application uses a flange style O-ring seal before ordering.
• Verify dimensions against the original seal when servicing older vehicles.
• Use the vehicle fitment list to confirm coverage for your exact year, make, and model.

Quality Assurance

Dorman designs this seal to match original equipment fit and function and to provide durable, reliable performance in fuel system service. The Dorman 911-572 part number is backed by Dorman’s OE-style replacement engineering for specified applications.