Dorman 926-160 Radiator Coolant Hose O-Ring

Radiator Coolant Hose O-Ring for GM Trucks

Dorman 926-160 is a radiator coolant hose O-ring for select Chevrolet Silverado HD and GMC Sierra HD applications with the updated hose design. It provides a direct replacement for the failed seal, helping restore the radiator outlet connection without replacing the entire hose assembly.

Built from FKM material with a round profile, this O-ring is sized for the specified radiator outlet application and is intended for GM heavy-duty truck cooling system service. If you are searching for a radiator coolant hose O-ring for a 2006-2014 Chevrolet Silverado 2500 HD or 2007-2014 GMC Sierra 3500 HD, this part number is the direct OE-style service solution.

• FKM construction for cooling system sealing applications
• Round O-ring shape for radiator outlet hose sealing
• Direct replacement for the failed O-ring instead of the full hose assembly
• Fits updated hose designs only on listed Chevrolet Silverado HD and GMC Sierra HD models
• OE FIX service part from Dorman

Detailed Product Information

Dorman 926-160 is engineered as a radiator coolant hose O-ring for the radiator outlet connection on select Chevrolet Silverado HD and GMC Sierra HD trucks. The seal measures 1.975 inches inside diameter, 2.395 inches outside diameter, and 0.21 inches thickness, with a round shape and FKM material construction. This makes it a focused replacement for the sealing surface used in the updated hose assembly. The part cross-references GM 19258629 for the same application.

For buyers looking up Dorman 926-160, this part is commonly searched as a radiator outlet hose O-ring for Chevrolet Silverado 2500 HD, Chevrolet Silverado 3500 HD, GMC Sierra 2500 HD, and GMC Sierra 3500 HD cooling system repair.

What It Helps Fix

• Coolant seepage at the radiator outlet hose connection
• Leakage caused by a worn or flattened O-ring
• Service delays when the original hose assembly is still usable
• Cooling system sealing issues on updated hose designs
• Need for a direct replacement seal on GM HD truck applications

Installation Notes and Tips

Verify the vehicle uses the updated hose before ordering, since this O-ring only fits the updated hose design listed in the fitment data. Inspect the sealing groove and hose end for wear, contamination, or damage before installation, and confirm the old seal dimensions match the replacement part. Use clean cooling system practices during service to help maintain a proper seal.

• Fits 2006-2014 Chevrolet Silverado 2500 HD, radiator outlet; only fits updated hose
• Fits 2007-2014 Chevrolet Silverado 3500 HD, radiator outlet; only fits updated hose
• Fits 2006-2014 GMC Sierra 2500 HD, radiator outlet; only fits updated hose
• Fits 2007-2014 GMC Sierra 3500 HD, radiator outlet; only fits updated hose
• Fits 2007 Chevrolet Silverado 2500 HD Classic, radiator outlet; only fits updated hose
• Fits 2007 Chevrolet Silverado 3500 Classic, radiator outlet; only fits updated hose
• Fits 2007 GMC Sierra 2500 HD Classic, radiator outlet; only fits updated hose
• Fits 2007 GMC Sierra 3500 Classic, radiator outlet; only fits updated hose
• Fits 2006 Chevrolet Silverado 3500, radiator outlet; only fits updated hose
• Fits 2006 GMC Sierra 3500, radiator outlet; only fits updated hose

Quality Assurance

Dorman OE FIX parts are developed to address common service failures with direct-fit replacement solutions. This part number, 926-160, is built for the specified GM radiator outlet hose application and is backed by Dorman’s product engineering standards.