Gates 20820 Radiator Coolant Hose - Lower or Upper

Gates 20820 Molded Coolant Hose

Gates 20820 is a molded radiator coolant hose built to OEM-quality specifications for upper, lower, bypass, heater, and other coolant routing applications. The EPDM construction and formed shape help match the original hose path on select vehicles, including Chevrolet S10, GMC Sonoma, Hyundai Excel, and Mitsubishi Precis applications.

Key Features

• EPDM rubber construction for coolant-system service
• Molded profile for a factory-style hose route
• Centerline length: 23.3 in. (592 mm)
• End inside diameters: 1.26 in. (32 mm) and 1.46 in. (37 mm)
• No spring and no quick-connect fittings
• Direct replacement style for select upper and lower coolant hose positions

Product Details

The Gates Molded Coolant Hose line is built for radiator and heater hose replacement where a shaped hose is required to follow the original cooling-system layout. Part number 20820 is formed to match specific vehicle routing and dimensions, helping maintain proper coolant flow and a secure fit at the connection points. This hose is listed for applications such as 1986-1993 Chevrolet S10 upper hose service, 1991-1993 GMC Sonoma upper hose service, and 1990-1994 Hyundai Excel lower hose service. Gates 20820 is also cross-referenced to Dayco 71288 for the same application.

Common Uses

• Replacing a cracked or softened radiator hose
• Restoring coolant flow after hose collapse or swelling
• Addressing leaks at molded hose bends or connection ends
• Servicing upper hose routing on Chevrolet S10 and GMC Sonoma
• Servicing lower hose routing on Hyundai Excel and Mitsubishi Precis

Installation Notes

Verify hose routing, end diameters, and centerline length before installation. Confirm whether the vehicle uses an upper or lower hose position, since Gates 20820 is listed for both positions across different applications. Inspect adjoining necks, clamps, and coolant passages for wear or corrosion before installing the new hose. For best results, match the hose to the exact year, make, model, and position shown in the fitment data.

Quality Assurance

Gates manufactures this molded coolant hose to OEM-quality specifications for replacement use in the cooling system. The molded design and EPDM material support accurate fitment on the listed applications, including Chevrolet S10, GMC Sonoma, Hyundai Excel, and Mitsubishi Precis models.