Dorman 625-303 Engine Oil Cooler Hose Assembly - Inlet

Engine Oil Cooler Hose Assembly

Dorman 625-303 is an engine oil cooler hose assembly built to match the fit and function of the original equipment line for reliable oil circulation between the oil cooler and engine. It is a direct replacement for select Chevrolet Silverado 2500 HD, Silverado 3500, Avalanche 2500, Suburban 2500, and GMC Sierra and Yukon XL applications with inlet-side fitment.

• Rubber/metal construction for the required balance of flexibility and line support
• 48-inch length for OE-style routing
• Male quick disconnect ends on both sides
• Natural finish
• Direct replacement for the inlet oil cooler line on listed applications

Fitment and Application Details

This Dorman 625-303 oil cooler hose assembly is made for vehicles that use an inlet-side cooler line with male quick disconnect connections. It fits 2007 Chevrolet Silverado 2500 HD Classic, inlet; 2007 GMC Sierra 2500 HD Classic, inlet; 2004-2006 Chevrolet Avalanche 2500, inlet; 2004-2006 Chevrolet Silverado 2500 HD, inlet; 2004-2006 Chevrolet Silverado 3500, inlet; 2004-2006 Chevrolet Suburban 2500, inlet; 2004-2006 GMC Sierra 2500 HD, inlet; 2004-2006 GMC Sierra 3500, inlet; 2004-2006 GMC Yukon XL 2500, inlet; and 2003 Chevrolet and GMC models with UCT tag, inlet. This part cross-references OE number 15809062 and Sunsong 5801105 for the same application.

Common Problems This Part Can Address

• Cracked or leaking oil cooler hose
• Restricted oil flow between the engine and oil cooler
• Damaged quick disconnect ends
• Oil seepage at the cooler line connection
• Heat-related deterioration of the original hose assembly

Installation Notes and Tips

Confirm inlet-side routing, connector style, and vehicle tag information before installation. Inspect the mating oil cooler and engine connections for wear, debris, or damage before attaching the new line. Verify that the hose follows the original path to avoid contact with hot or moving components.

Quality Assurance

Dorman manufactures this hose assembly as an OE-style replacement engineered to match original fit and function for proper oil circulation in the listed Chevrolet Silverado 2500 HD, Silverado 3500, Avalanche 2500, Suburban 2500, and GMC Sierra applications.