Dorman 926-161 Radiator Coolant Hose O-Ring

Dorman 926-161 Radiator Coolant Hose O-Ring

Dorman 926-161 is a radiator coolant hose O-ring for radiator outlet service on select GM trucks and SUVs. It provides a direct replacement for the failed seal, helping restore a proper coolant connection without replacing the entire hose assembly.

Built from FKM material, this round O-ring is sized for the radiator outlet connection and is made for OE-style service on applications such as Chevrolet Silverado 2500 HD, Chevrolet Suburban 2500, GMC Sierra 3500, and GMC Yukon XL 2500.

Key Features

• Direct replacement radiator coolant hose O-ring for radiator outlet repairs
• FKM material for sealing performance in cooling system service
• Round profile with 1.734 inside diameter, 0.139 thickness, and 2.012 outside diameter
• OE FIX solution that replaces the failed seal instead of the full hose assembly
• Fits select 2001-2007 Chevrolet and GMC applications
• Part number 926-161 for easy lookup and ordering

Detailed Description

When the radiator hose seal wears out or leaks, the original repair path often points to replacing the complete hose assembly. Dorman 926-161 offers a more targeted repair by replacing only the O-ring at the radiator outlet. This approach supports faster service and helps reduce unnecessary parts replacement on vehicles such as the Chevrolet Silverado 2500 HD, GMC Sierra 2500 HD, and Chevrolet Avalanche 2500.

This part cross-references GM 15168745 for the same application. The part number 926-161 is a practical OE-style solution for cooling system maintenance where the radiator outlet seal is the failure point.

What It Helps Fix

• Coolant seepage at the radiator outlet
• Leakage caused by a flattened, hardened, or damaged hose O-ring
• Loss of sealing at the radiator hose connection
• Unnecessary replacement of the full hose assembly
• Cooling system service issues on select Chevrolet and GMC trucks and SUVs

Installation Notes and Tips

Inspect the radiator outlet and hose sealing surfaces before installation. Clean away old coolant residue, debris, and any remaining seal material so the new O-ring seats evenly. Verify the application by year, make, model, and radiator outlet position before ordering or installing part number 926-161.

• Fits 2007 Chevrolet Silverado 2500 HD Classic, Radiator Outlet
• Fits 2007 Chevrolet Silverado 3500 Classic, Radiator Outlet
• Fits 2007 GMC Sierra 2500 HD Classic, Radiator Outlet
• Fits 2007 GMC Sierra 3500 Classic, Radiator Outlet
• Fits 2002-2006 Chevrolet Avalanche 2500, Radiator Outlet
• Fits 2001-2006 Chevrolet Silverado 2500 HD, Radiator Outlet
• Fits 2001-2006 Chevrolet Silverado 3500, Radiator Outlet
• Fits 2001-2006 Chevrolet Suburban 2500, Radiator Outlet
• Fits 2001-2006 GMC Sierra 2500 HD, Radiator Outlet
• Fits 2001-2006 GMC Sierra 3500, Radiator Outlet
• Fits 2001-2006 GMC Yukon XL 2500, Radiator Outlet

Quality Assurance

Dorman OE FIX parts are engineered to address common failure points with service-focused replacement solutions. Part number 926-161 is built for direct-fit cooling system repair on the listed Chevrolet and GMC applications.