Dorman 904-8056 O-Ring Assortment

Durable O-Ring Assortment for Automotive Repairs

The Dorman 904-8056 O-Ring Assortment provides a selection of essential sealing components designed for various automotive applications. This assortment includes multiple sizes and materials to accommodate different sealing needs in vehicles such as Ford F-150, Chevrolet Silverado, and Toyota Tacoma.

• Includes 12 rubber and copper o-rings plus 6 washers
• O-rings feature round rim shape for reliable sealing
• Varied sizes with inside diameters from 0.305 to 0.926 inches
• Maximum outside diameters range from 0.589 to 1.063 inches
• Thickness varies between 0.07 and 0.287 inches for versatile fitment
• Color-coded in green, yellow, and copper for easy identification

Product Details and Specifications

The Dorman 904-8056 assortment includes o-rings made from durable rubber and copper materials, suitable for sealing fluid and air passages in automotive systems. The round rim shape ensures consistent compression and sealing performance. Sizes cover a range of inside diameters from 0.305 to 0.926 inches and outside diameters up to 1.063 inches, with thicknesses tailored to different sealing requirements. The assortment’s color finish—green, yellow, and copper—helps technicians quickly select the correct o-ring during maintenance or repair.

Common Applications and Problem Solving

• Sealing hydraulic lines and preventing fluid leaks in brake and transmission systems
• Replacing worn or damaged o-rings in engine cooling and fuel systems
• Addressing air leaks in vacuum and intake manifolds
• Restoring proper sealing in power steering components
• Maintaining pressure integrity in automotive air conditioning systems

Installation Notes and Tips

When installing the Dorman 904-8056 o-rings, ensure the sealing surfaces are clean and free of debris. Lubricate o-rings lightly with compatible grease or fluid to prevent twisting or damage during installation. Verify the correct size and thickness before placement to maintain proper sealing and avoid leaks. Avoid over-tightening components that compress the o-rings to prevent premature wear.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for durability and fitment. The 904-8056 O-Ring Assortment undergoes quality control inspections to ensure consistent dimensions and material integrity. While specific warranty details are not provided, Dorman products typically carry a limited warranty against defects in material and workmanship.