Dorman 625-125 Engine Oil Cooler Hose Assembly - Inlet (Upper)

Engine Oil Cooler Hose Assembly for OE Repair

This Dorman engine oil cooler hose assembly restores the oil flow path between the oil cooler and engine with an OE-style fit and function. Built with rubber and metal construction, it is a direct repair option for select Chevrolet and GMC vans that need a reliable inlet upper oil cooler line.

Compatible with 1985-1991 Chevrolet G20 and Chevrolet G30, inlet (upper), as well as 1985-1991 GMC G2500 and GMC G3500, inlet (upper). Part number 625-125 is a practical replacement when the original oil cooler hose has aged, leaked, or lost proper sealing at the threaded ends.

Key Features

• Engine oil cooler hose assembly for restoring oil circulation between the oil cooler and engine
• Rubber/metal construction for a balance of flexibility and durability
• 28.25-inch length for the specified inlet upper application
• Male threads on one end and female threads on the other for OE-style connection points
• Natural finish with an included oil cooler line in the package contents
• Direct-fit replacement for select Chevrolet G20, Chevrolet G30, GMC G2500, and GMC G3500 applications

Detailed Description

Dorman 625-125 is engineered to match the fit and function of the original engine oil cooler hose assembly used on select full-size Chevrolet and GMC vans. The rubber/metal design supports the routing and connection requirements of the inlet upper oil cooler line, helping maintain proper oil circulation between the cooler and the engine. If you are replacing a worn oil cooler hose on a Chevrolet G20, Chevrolet G30, GMC G2500, or GMC G3500, this part provides a straightforward OE-style service solution.

This part cross-references 12472219 and B64206 for the same application.

What It Helps Fix

• Oil seepage or leakage at the cooler line connection
• Cracked, hardened, or deteriorated hose material
• Threaded end wear that prevents a secure seal
• Restricted oil flow between the oil cooler and engine
• Failure of the original inlet upper oil cooler hose assembly

Installation Notes and Tips

Verify the inlet (upper) position before installation and confirm the male-thread and female-thread end orientations match the vehicle connection points. Inspect the mating fittings, sealing surfaces, and adjacent oil cooler components for wear or contamination before installing part number 625-125. Proper tightening and clean connection surfaces help support a leak-free repair.

Quality Assurance

Dorman manufactures replacement components that mirror original equipment fit and function for repair-focused applications. This oil cooler hose assembly is built for direct replacement use on the listed Chevrolet and GMC vehicles, including 1985-1991 Chevrolet G20 and G30 and 1985-1991 GMC G2500 and G3500.