Gates 25307 Radiator Coolant Hose - Lower or Upper

Flexible coolant hose for broad OE-style replacement

The Gates 25307 Flexible Coolant Hose is built for radiator coolant routing where a standard molded hose is difficult to source or match. Its flexible construction bends in multiple directions to replicate the angles and planes of many original equipment hose layouts, making it a practical replacement for upper and lower cooling system applications.

Compatible With a wide range of vehicles including Jeep Grand Cherokee, Ford Mustang, Chevrolet S10, Toyota Pickup, and Land Rover applications, this hose is sized for common coolant connections and direct-fit service work.

Key features

• Gates Vulco-Flex II design for flexible coolant routing
• Improved sealing surface for stronger leak resistance
• EPDM and steel construction for cooling system durability
• End sizes: 1.25 in. (32 mm) and 1.5 in. (38 mm)
• Centerline length: 23 in. (584 mm)
• Non-molded design for routing around tight engine bay layouts
• Fits upper and lower radiator coolant hose applications across multiple platforms

Product details

Gates Flexible Coolant Hose, Part Number 25307, is engineered as a standard replacement for vehicles that need a durable hose with more routing freedom than a fixed molded part. The flexible profile helps duplicate OE hose geometry while the reinforced EPDM and steel construction supports long-term use in the cooling system. This makes the Gates 25307 a strong choice when replacing aging radiator hoses on older domestic and import vehicles.

This part cross-references Gates 31624 and FF278 for the same application.

What this hose helps address

• Cracked or hardened radiator coolant hoses
• Leaking hose connections at the sealing surface
• Hard-to-match OE hose shapes on older vehicles
• Cooling system service on upper or lower hose routes
• Replacement needs for vehicles with limited molded-hose availability

Installation notes and tips

Verify end diameters and centerline length before installation. Confirm whether the vehicle uses an upper or lower hose location and check clearance around belts, pulleys, fan shrouds, and nearby accessories. Some listed applications include notes for air conditioning or police package configurations, so match the exact vehicle setup before ordering. For best results, inspect hose clamps, necks, and adjacent cooling components during service.

Quality assurance

Gates Vulco-Flex II hoses are engineered for durable cooling system service with an improved sealing surface to help reduce leak points. Part number 25307 is built to meet the demands of replacement work on a wide range of OE-style radiator hose applications.