Gates 20854 Radiator Coolant Hose - Lower

Gates 20854 Molded Lower Coolant Hose

Gates 20854 is a molded radiator coolant hose built for lower cooling-system routing on a wide range of classic GM vehicles. It uses EPDM construction and an internal spring to help maintain hose shape under heat and vacuum conditions, with OEM-style dimensions for a direct replacement on listed applications.

Key Features

• EPDM rubber construction for coolant-system service
• Molded shape for lower radiator hose routing
• Internal spring included to help resist collapse
• End 1 inside diameter: 1.5 in. (38 mm)
• End 2 inside diameter: 1.75 in. (44 mm)
• Centerline length: 20.4 in. (518 mm)
• Fits lower hose positions on listed Buick, Chevrolet, Oldsmobile, and Pontiac applications

Product Details

This Gates Molded Coolant Hose line is engineered for upper, lower, bypass, heater, and other coolant applications using OEM-quality specifications. For buyers searching for a lower radiator hose for a 1977 Pontiac Grand LeMans, 1978-1981 Pontiac Grand Prix, or 1974-1981 Pontiac Firebird, Gates 20854 provides the molded routing and sizing needed for the listed fitments. This part cross-references Continental 60702 and CSF 3854 for the same application.

Common Problems It Can Help Address

• Coolant leaks from a cracked or aged lower radiator hose
• Softening, swelling, or heat damage in the original hose
• Hose collapse under suction at higher engine speeds
• Poor fitment from a universal hose that does not match the factory bend
• Cooling-system service on older Buick, Chevrolet, Oldsmobile, and Pontiac models

Installation Notes and Tips

Verify the hose routing, end diameters, and centerline length against the removed part before installation. This lower molded coolant hose is listed for applications including 1977-1981 Buick Century and Regal, 1977-1979 Chevrolet Caprice and Impala, and 1977-1981 Pontiac Bonneville and Catalina. Inspect clamps, necks, and adjacent cooling components for wear before refilling the system.

Quality Assurance

Gates manufactures this molded coolant hose to OEM-quality specifications for replacement use in cooling-system service. The Gates 20854 part number is supported by a broad replacement-market catalog and application coverage for the listed vehicles.