Dorman 55812 Fuel Tank Sending Unit Lock Ring

Durable Steel Fuel Tank Sending Unit Lock Ring

The Dorman 55812 Fuel Tank Sending Unit Lock Ring is engineered to provide a secure seal and reliable fitment for various GM and Ford vehicles. Designed with precision, this steel lock ring ensures proper retention of the fuel sending unit, maintaining fuel system integrity.

• Constructed from durable steel for long-lasting strength
• Includes mounting hardware and gasket for complete installation
• Inside diameters of 3.125 and 3.875 inches for versatile fitment
• Outside diameters of 3.875 and 4.688 inches to match OEM specifications
• Lock ring diameter measures 3 inches for secure sealing
• Package contains two fuel sending unit retainer rings

Product Details and Specifications

The Dorman 55812 lock ring is designed to fit a wide range of vehicles including Buick, Cadillac, Chevrolet, Ford, GMC, Lincoln, Mercury, Oldsmobile, and Pontiac models. Its steel construction offers resistance to corrosion and deformation, ensuring a tight seal around the fuel tank sending unit. The included gasket and mounting hardware simplify installation and help prevent fuel leaks. With inside diameters of 3.125 and 3.875 inches and outside diameters of 3.875 and 4.688 inches, this lock ring matches OEM dimensions for proper fitment on models such as the Chevrolet Blazer, Ford F-150, GMC Sierra, and Pontiac Bonneville.

Compatible Vehicles and Applications

• Compatible with Chevrolet Blazer, Camaro, and Cavalier fuel tank sending units
• Fits Ford F-150, F-250, and Bronco models requiring a 3-inch lock ring diameter
• Suitable for GMC Sierra and Yukon fuel system repairs
• Works with Buick Century, Cadillac DeVille, and Pontiac Bonneville fuel tanks
• Applicable for Lincoln Town Car and Mercury Cougar fuel sending unit replacements

Installation Notes and Tips

• Ensure the fuel tank sending unit and lock ring surfaces are clean before installation
• Use the included gasket to prevent fuel leaks and maintain a proper seal
• Hand-tighten the lock ring initially, then use appropriate tools to secure without over-tightening
• Verify lock ring diameter matches the sending unit to avoid fitment issues
• Replace both lock rings if installing multiple sending units to maintain consistency

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards, providing reliable performance and durability. The 55812 Fuel Tank Sending Unit Lock Ring is backed by Dorman's limited warranty, ensuring coverage against defects in material and workmanship. This commitment to quality supports professional repairs and long-term vehicle maintenance.