Gates 25477 Radiator Coolant Hose

Flexible coolant hose for broad OE-style replacement

Gates Vulco-Flex II Part Number 25477 is a flexible radiator coolant hose built for applications that need a formed-style replacement without the cost of a molded hose. Its EPDM and steel construction, along with an improved sealing surface, helps deliver a secure connection in upper and lower cooling system routes.

Compatible With Ford Ranger lower hose applications, Honda Passport upper hose applications, and other listed vehicles across 1953-1997 coverage, this Gates 25477 hose is made to follow complex routing where a standard straight hose would not work.

Key features

• Flexible coolant hose design for routing in almost any direction
• EPDM and steel construction for cooling system durability
• Improved sealing surface for stronger leak resistance at the connection points
• Non-molded design for use in a wide range of OE-style replacement applications
• 1.5 in. inside diameter at both ends for consistent hose connection sizing
• 15.5 in. centerline length for applications requiring extended routing
• Part number 25477 for easy identification and ordering

Detailed description

Gates Flexible Coolant Hose (Standard) 25477 is engineered to replicate the angles and planes found in many original equipment coolant hose layouts. That makes it a practical replacement when servicing cooling systems on vehicles such as the Ford Taurus, Mercury Sable, and Isuzu Trooper, where hose routing and clearance matter. The flexible construction helps reduce the need to source expensive molded OE hoses while maintaining a proper fit at the radiator or engine connection.

This hose is listed for upper, lower, lower engine-to-pipe, upper pipe-to-radiator, and upper radiator-to-tank positions across the fitment data. It is a direct replacement choice for technicians and DIY repairs that require a radiator coolant hose with a 1.5-inch diameter and a 15.5-inch centerline length.

This part cross-references Dayco 81161 and Continental 52415 for the same application.

What it helps solve

• Cracked, hardened, or leaking radiator coolant hose sections
• Replacement needs where a molded hose is no longer practical or available
• Cooling system routing issues in upper or lower hose positions
• Leak points caused by poor sealing at hose ends
• Costly OE hose replacement when a flexible alternative is listed

Installation notes and tips

• Verify the vehicle’s year, make, model, and hose position before installation.
• Confirm the 1.5 in. end diameters and 15.5 in. centerline length match the original routing.
• Check clearance around belts, pulleys, fan shrouds, and adjacent components before final tightening.
• Inspect the mating tubes for corrosion, pitting, or deformation that could affect sealing.
• Follow the vehicle service procedure for coolant refill and air bleeding after hose replacement.

Quality assurance

Gates designs the Vulco-Flex II line as a durable, flexible coolant hose solution with an improved sealing surface for leak resistance. Part Number 25477 is built for OE-style replacement use in listed applications and is backed by Gates product engineering standards.