Dorman 578-042 Fuel Tank Strap

Dorman 578-042 Fuel Tank Strap for GM Trucks

Dorman 578-042 is a direct replacement fuel tank strap for select Chevrolet and GMC trucks with a 34 gallon tank. Built from steel with a silver finish, it is made to replace a worn, rusted, or damaged strap during fuel tank service on C/K 1500, 2500, and 3500 applications.

Key Features

• Direct replacement fuel tank strap for select GM truck fuel tank applications
• Steel construction for strength and long-term support
• Silver finish
• Designed for 34 gallon tank applications
• Replacement part number: 578-042
• Cross-reference: Spectra Premium ST42

Detailed Description

This Dorman fuel tank strap is engineered for Chevrolet C1500, C2500, C3500, K1500, K2500, and K3500 as well as GMC C1500, C2500, C3500, K1500, K2500, and K3500 models listed for 34 gallon tank applications. It also covers 1998 Chevrolet C35 and Silverado 34 gallon tank applications. The strap dimensions include 30 in and 29 in lengths with an 8.5 in width, matching the original-style support needed to secure the fuel tank in place. Part number 578-042 is a practical replacement when the original strap is corroded, bent, or removed during tank service.

Common Issues This Part Can Address

• Rust or corrosion on the original fuel tank strap
• Broken or weakened tank support during fuel tank replacement
• Fuel tank movement caused by a damaged retaining strap
• Service-related replacement after tank removal or inspection
• Fitment concerns on 34 gallon tank GM truck applications

Installation Notes and Tips

Verify the vehicle’s tank size before ordering, since this strap is listed for 34 gallon tank applications only. Confirm the model year and configuration against the fitment list, including mid-ship fuel tank notes where specified. Installation hardware is not included, so reuse or source the required mounting hardware as needed. For best results, inspect the fuel tank, mounting points, and surrounding hardware for corrosion before installation.

Quality Assurance

Dorman manufactures this strap from durable steel to withstand road debris, moisture, and weather exposure. It is a direct replacement part intended to restore original-style fuel tank support on the listed Chevrolet and GMC applications.