Gates 21188 Radiator Coolant Hose - Upper

Gates 21188 Molded Coolant Hose Overview

The Gates 21188 molded coolant hose is an OE-style radiator coolant hose built from EPDM for dependable coolant routing in select applications. It is shaped for upper hose use and follows OEM-quality specifications for a direct replacement on vehicles such as Chevrolet P30, GMC P3500, and Dodge Caravan applications.

Key Features

• EPDM construction for coolant-system durability
• Molded design for proper routing and fit
• 1.25 in. inside diameter at both ends
• 32 in. centerline length
• No spring and no quick-connect fittings
• Upper hose application for select radiator and HVAC coolant routing

Product Details

Gates Molded Coolant Hose line is built to replace upper, lower, bypass, heater, and other coolant hoses with OEM-quality dimensions. Part number 21188 is a molded radiator coolant hose with a 1.25-inch end size and 32-inch centerline length, making it a practical replacement when the original hose has softened, cracked, or lost its shape. This hose is listed for 1990-1992 Chrysler Town & Country, Dodge Caravan, Dodge Grand Caravan, Plymouth Grand Voyager, and Plymouth Voyager upper hose applications, along with 1996-1999 Chevrolet P30 and GMC P3500 upper hose applications. This part cross-references Dayco 71089 for the same application.

Common Problems This Hose Can Help Address

• Coolant leaks from a cracked or deteriorated upper radiator hose
• Collapsed or misshaped hose routing after heat cycling
• Restricted coolant flow caused by an aging hose interior
• Fitment issues when replacing a molded hose with a universal hose
• Service delays when the original hose no longer matches the factory bend

Installation Notes and Tips

• Verify the vehicle application and upper hose routing before installation.
• Protective sleeve required on listed Chevrolet P30 and GMC P3500 applications.
• Cut to fit where noted in the fitment data for P30 and P3500 applications.
• Inspect clamps, necks, and adjoining coolant components before reassembly.
• Confirm hose orientation so the molded shape follows the factory path without twisting.

Quality Assurance

Gates manufactures this molded coolant hose to OEM-quality specifications for replacement use in cooling-system service. The Gates Molded Coolant Hose product line is built to cover a wide range of radiator and heater hose applications with consistent molded construction and application-specific fitment.