Gates 20925 Radiator Coolant Hose

Gates 20925 Molded Coolant Hose

The Gates 20925 molded coolant hose is built for radiator coolant routing on select Chevrolet and GMC trucks and vans. It uses EPDM construction and molded shaping to match the original hose path for service on upper, lower, bypass, heater, and other coolant applications.

Key Features

• EPDM rubber construction for coolant-system service
• Molded hose design for a formed OE-style routing path
• 16 mm inside diameter at both ends
• 147 mm centerline length
• No spring, no modular sections, and no quick-connect fittings
• Direct replacement style for radiator coolant hose service

Product Details

Gates Molded Coolant Hose line is engineered to replace formed coolant hoses used in radiator and engine cooling circuits. Part number 20925 is a molded radiator coolant hose with equal 16 mm end diameters and a 147 mm centerline length, making it suitable for applications that require a shaped hose rather than a straight universal length. This hose is listed for Chevrolet P20, P30, C10, C20, C30, K10, K20, K30, G20, G30, R20, R30, V20, V30, and GMC P2500, P3500, C1500, C2500, C3500, K1500, K2500, K3500, P1500, R2500, R3500, V2500, V3500, G25, and G35 models across the 1975-1989 range. This part cross-references Dayco 70785 for the same application.

Common Problems This Hose Can Address

• Cracked or hardened coolant hose material
• Leaks at a formed radiator hose section
• Incorrect hose routing after prior repairs
• Cooling-system service on aging Chevrolet and GMC trucks
• Replacement of a worn molded hose on P-series, C-series, K-series, G-series, R-series, or V-series vehicles

Installation Notes and Tips

Verify hose routing, end diameter, and centerline length before installation. Compare the original hose shape to the molded profile of Gates 20925 to confirm alignment with the cooling circuit. Inspect adjoining necks, clamps, and coolant passages for wear or corrosion before reassembly. This hose is listed for 1975-1989 Chevrolet P20 and P30, 1975-1986 Chevrolet C30 and K20, and 1979-1986 GMC C3500 and K3500 applications, along with other listed Chevrolet and GMC models.

Quality Assurance

Gates manufactures this molded coolant hose to OEM-quality specifications for replacement use in radiator and engine cooling systems. The EPDM material and molded construction are selected for fitment-focused service on the listed Chevrolet and GMC applications.