Gates 25253 Radiator Coolant Hose

Flexible coolant hose for OE-style replacement

The Gates 25253 Vulco-Flex II is a flexible radiator coolant hose built for direct replacement where a formed hose is difficult to source or route. With a 1.25 in. inside diameter at both ends and a 17 in. centerline length, it is sized for a wide range of upper and lower cooling system applications across Chrysler, Toyota, Mazda, Ford, and other vehicles.

Gates Flexible Coolant Hose (Standard) line focuses on practical OE-style service parts for cooling system repair. This hose is engineered to follow multiple angles and planes, making it a useful option when replacing expensive molded hoses on vehicles such as the Toyota Tacoma, Mazda 626, and Dodge Avenger.

Key features

• Part number: Gates 25253
• 1.25 in. inside diameter on End 1 and End 2
• 17 in. centerline length for flexible routing
• EPDM and steel construction for cooling system service
• Non-molded design for broad application coverage
• Improved sealing surface for stronger leak resistance
• Replicates complex OE hose angles and planes

Detailed product description

This radiator coolant hose is designed for vehicles that need a flexible replacement instead of a pre-formed molded hose. The Gates Vulco-Flex II construction uses EPDM with steel reinforcement to provide the flexibility needed for routing while maintaining the structure required for coolant service. The improved sealing surface helps support a tighter connection at the hose ends, which is important in high-temperature cooling system operation.

Compatible With applications include Fits 1995-1999 Chrysler Sebring, lower; Fits 1995-1999 Dodge Avenger, lower; Fits 1997 Toyota Tacoma, upper; and Fits 1993-1997 Mazda 626, upper. The Gates 25253 also appears in fitments for Toyota 4Runner, Mazda MX-6, Ford Escort, and Hyundai Sonata, making it a practical search match for drivers and technicians working on older import and domestic cooling systems.

This part cross-references Dayco 81051 and Dorman - HELP 67901 for the same application.

Common cooling system issues it can address

• Replacement for a cracked or split radiator coolant hose
• Service for a leaking hose connection at the radiator or engine pipe
• Repair for a hose that no longer holds its original shape
• Solution for hard-to-source molded hose routing on older vehicles
• Direct replacement for worn upper or lower coolant hose applications

Installation notes and tips

Verify end diameter, centerline length, and hose position before installation. This hose is listed for upper, lower, upper passenger side, lower pipe-to-radiator, lower radiator-to-thermostat, upper engine-to-pipe, and upper pipe-to-radiator applications depending on vehicle fitment. Confirm the vehicle’s cooling system layout and compare the removed hose to the replacement part before final assembly.

For best results, inspect hose clamps, radiator necks, thermostat housing connections, and nearby pipes for wear or corrosion before installing the new hose. Clean sealing surfaces thoroughly so the hose seats evenly.

Quality assurance

Gates is known for cooling system service parts engineered to match OE-style fit and routing requirements. The 25253 is built as a flexible coolant hose replacement for a broad range of confirmed applications, with construction and sealing features aimed at dependable cooling system service.