Dorman 926-161 Radiator Coolant Hose O-Ring

Durable Radiator Coolant Hose O-Ring for Chevrolet and GMC

The Dorman 926-161 Radiator Coolant Hose O-Ring is engineered to provide a reliable seal in the cooling systems of select Chevrolet and GMC heavy-duty trucks. Designed with precision and made from FKM material, this o-ring ensures consistent performance under high temperature and pressure conditions.

• Constructed from FKM (fluoroelastomer) for enhanced heat and chemical resistance
• Inside diameter of 1.734 inches and outside diameter of 2.012 inches for precise fitment
• Thickness of 0.139 inches with a round cross-sectional shape
• Compatible with Chevrolet Avalanche 2500, Silverado 2500 HD, Silverado 3500, Suburban 2500, and GMC Sierra 2500 HD, Sierra 3500, Yukon XL 2500 models
• Includes one high-quality radiator coolant hose o-ring per package

Technical Details and Material Benefits

The Dorman 926-161 o-ring is manufactured from FKM, a fluoroelastomer known for its superior resistance to heat, oil, and coolant chemicals. This material choice helps maintain a secure seal within the radiator coolant hose connections, reducing the risk of leaks and system failures. The o-ring’s dimensions—1.734 inches inside diameter, 2.012 inches outside diameter, and 0.139 inches thickness—are designed to meet the exact specifications required for the cooling systems in Chevrolet and GMC heavy-duty trucks, including the Avalanche 2500 and Sierra 3500 Classic.

Compatible Vehicles and Applications

This radiator coolant hose o-ring is compatible with the following Chevrolet and GMC models:

• Chevrolet Avalanche 2500
• Chevrolet Silverado 2500 HD and 2500 HD Classic
• Chevrolet Silverado 3500 and 3500 Classic
• Chevrolet Suburban 2500
• GMC Sierra 2500 HD and 2500 HD Classic
• GMC Sierra 3500 and 3500 Classic
• GMC Yukon XL 2500

Common Issues Addressed by This O-Ring

• Prevents coolant leaks at radiator hose connections
• Reduces risk of overheating due to coolant loss
• Maintains system pressure for optimal engine cooling
• Resists degradation from exposure to engine fluids and heat
• Helps avoid costly repairs related to cooling system failures

Installation Notes and Tips

When installing the Dorman 926-161 radiator coolant hose o-ring, ensure the mating surfaces are clean and free of debris to achieve a proper seal. Lubricate the o-ring lightly with compatible coolant or lubricant to ease installation and prevent damage. Verify the o-ring is seated evenly within the hose connection to avoid pinching or misalignment. This part is designed for professional installation or experienced DIY mechanics familiar with cooling system components on Chevrolet and GMC heavy-duty trucks.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM specifications, providing reliable performance and durability. The 926-161 radiator coolant hose o-ring undergoes rigorous quality control to ensure dimensional accuracy and material integrity. While specific warranty details may vary, Dorman typically offers limited warranties covering defects in material and workmanship to support long-term use in Chevrolet Avalanche 2500 and GMC Sierra 3500 applications.