Gates 21084 Radiator Coolant Hose - Upper

Gates 21084 Molded Coolant Hose

Gates 21084 is a molded radiator coolant hose built for upper cooling-system routing on select Ford, Mercury, and Isuzu applications. It uses EPDM construction and OEM-style molded shaping to match the original hose path and fitment requirements.

Key Features

• EPDM rubber construction for coolant-system service
• Molded design for the upper radiator hose route
• 1.25 in. inside diameter at both ends
• 14 in. centerline length
• No spring, no branch, and no quick-connect fittings
• Direct replacement style for select 1978-1984 vehicles

Product Details

This Gates Molded Coolant Hose line is built to cover upper, lower, bypass, heater, and other coolant applications with OEM-quality specifications. For this application, the Gates 21084 hose is shaped for upper hose routing and is listed for select Ford Mustang, Ford Fairmont, Mercury Capri, Mercury Zephyr, Mercury Marquis, Mercury LTD, Mercury Cougar, and Isuzu I-Mark models. It is a practical replacement for aging radiator hoses that have softened, cracked, or lost their original form.

Compatible fitment includes 1982-1984 Ford Mustang, Upper; 1982-1983 Ford Fairmont, Upper; 1983-1984 Ford LTD, Upper; 1982-1984 Mercury Capri, Upper; 1983-1984 Mercury Marquis, Upper; 1982-1983 Mercury Zephyr, Upper; and 1981-1984 Isuzu I-Mark, Upper. The part number 21084 is also referenced in interchange listings for related replacement searches, including Dayco 70960 and 72093.

What It Helps Address

• Coolant leaks from cracked or deteriorated upper radiator hoses
• Improper hose routing caused by a misshaped replacement hose
• Softening, swelling, or collapse in an aging EPDM hose
• Loss of cooling-system integrity on older Ford, Mercury, and Isuzu vehicles
• Fitment issues when replacing a molded upper hose with a generic straight hose

Installation Notes and Tips

Verify the vehicle’s cooling-system configuration before ordering, especially on applications noted as without air conditioning or not compatible with air conditioning. Confirm the upper hose routing, end diameters, and centerline length against the original part before installation. Inspect hose clamps, thermostat housing, and radiator necks for wear or corrosion while the hose is removed.

Quality Assurance

Gates manufactures this molded coolant hose to OEM-quality specifications for the listed applications. The molded construction and EPDM material support accurate replacement of the original upper radiator hose path on the confirmed fitment vehicles.