Automatic Transmission Oil Cooler Hose Assembly

Dorman 724-135 is an automatic transmission oil cooler hose assembly built to match the fit and function of the original line on specified vehicles. It is a direct replacement for leaking or damaged transmission cooler lines on the 2006-2013 Chevrolet Corvette, with inlet and outlet fitment for models without RPO code KNR rear axle cooling.

• Gray molded hose assembly with a 70-inch length
• 2 female quick disconnects at End 1
• Bracket-style mount at End 2
• Steel and aluminum construction
• Maximum working pressure: 250
• Operating temperature range: -40F to 329F
• Includes fittings and gasket/seal components

Fitment Details

Fits 2006-2013 Chevrolet Corvette, inlet and outlet, wo/RPO Code KNR (Rear Axle Cooling). This Dorman 724-135 transmission oil cooler hose assembly is matched to the original routing and connection style for the Corvette application listed above.

This part cross-references OE number 15885075 for the same application.

Common Repair Uses

• Transmission fluid leaks from a cracked or worn cooler hose
• Damaged quick-disconnect or bracket-mounted line connections
• Restricted transmission cooler flow caused by line deterioration
• Replacement of a corroded or bent automatic transmission oil cooler hose assembly

Installation Notes

Verify the vehicle uses the inlet and outlet configuration shown for the 2006-2013 Chevrolet Corvette and confirm the absence of RPO code KNR before installation. Inspect the mating ports, brackets, and seals for wear or contamination, and replace any damaged sealing surfaces before connecting the new line. Follow factory service procedures for transmission fluid handling and line routing.

Quality Assurance

Dorman engineers this hose assembly as a direct-fit replacement for the original transmission cooler line on the listed Corvette applications. The molded construction, metal fittings, and included seal components are selected to restore proper connection and fluid transfer at the transmission cooler circuit.