Gates 21602 Radiator Coolant Hose - Lower or Upper

Gates 21602 Molded Coolant Hose Overview

The Gates 21602 molded coolant hose is an OE-style radiator coolant hose built for specific upper and lower cooling-system applications. Made from EPDM, it is shaped to match the routing needed for select Mitsubishi Sigma, Mitsubishi Galant, and Pontiac Firebird fitments.

Gates Molded Coolant Hose is a dedicated replacement line for radiator, heater, bypass, and other coolant hose applications where a formed hose is required. This product line focuses on OEM-quality specifications to simplify radiator hose replacement on the vehicles listed below.

Key Features

• EPDM construction for coolant-system service
• Molded design for proper hose routing
• 1.25 in. inside diameter at both ends
• 25.9 in. centerline length
• No spring and no quick-connect fittings
• Direct replacement style for select upper and lower coolant hose applications

Detailed Description

Gates part number 21602 is a molded radiator coolant hose with a 1.25-inch inside diameter on both ends and a 25.9-inch centerline length. Its formed shape helps match factory hose routing on cooling-system and HVAC-related coolant paths, reducing the need to adapt a universal hose. For buyers searching for a Mitsubishi Sigma lower radiator hose, Mitsubishi Galant lower coolant hose, or Pontiac Firebird upper radiator hose, this formed EPDM hose provides the correct profile for the listed applications.

This part cross-references Dayco 71309 and Continental 61454 for the same application.

Vehicle Fitment

• Fits 1989-1990 Mitsubishi Sigma, lower
• Fits 1988 Mitsubishi Galant, lower
• Fits 1985-1989 Pontiac Firebird, upper

Common Problems This Hose Can Address

• Cracked or hardened radiator hose material
• Coolant leaks from a formed hose that no longer seals correctly
• Poor hose routing after an incorrect universal replacement
• Heat-related hose swelling or collapse in service
• Fitment issues when replacing a molded upper or lower coolant hose

Installation Notes and Tips

Confirm the hose position, end diameters, and centerline length before installation. Inspect hose clamps, mating necks, and nearby cooling-system components for wear or corrosion before reassembly. Drain coolant as needed, route the hose without twisting, and verify clearance after installation.

Quality Assurance

Gates manufactures this molded coolant hose to OEM-quality specifications for the listed applications. The formed construction and EPDM material support accurate replacement of the original hose profile on compatible Mitsubishi and Pontiac vehicles.