Automatic Transmission Oil Cooler Hose Assembly

Dorman 724-137 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 RPO code KNR rear axle cooling.

• Fits 2006-2013 Chevrolet Corvette, outlet to transmission (driver side)
• Gray molded hose assembly with a 75-inch length
• 2 female quick disconnects on End 1
• Bracket-style mount on End 2
• Steel and aluminum hose material for OE-style routing and support
• Includes fittings and gasket/seal
• Maximum working pressure: 250
• Operating temperature range: -40F to 329F

Detailed Product Overview

This Dorman transmission oil cooler hose assembly is engineered as a replacement for the original cooler line used on Chevrolet Corvette applications with the outlet-to-transmission, driver-side routing. The molded assembly helps maintain the factory-style path between the transmission and cooler circuit, while the quick-disconnect and bracket-style ends support a secure connection at the vehicle-specific mounting points. If you are searching for a 2006-2013 Chevrolet Corvette transmission oil cooler hose assembly, Dorman 724-137 is built for that exact service position.

This part cross-references OE number 20838725 for the same application.

What It Helps Fix

• Transmission fluid leaks from a damaged cooler hose assembly
• Cracked or corroded original cooler lines
• Improper routing caused by a bent or failed hose assembly
• Loss of transmission cooler circuit integrity
• Service issues on Corvette outlet-to-transmission driver-side line routing

Installation Notes and Tips

Verify vehicle fitment by year, model, position, and RPO code KNR before installation. Inspect the mating connections, mounting points, and sealing surfaces for wear or contamination, and replace any damaged seals or related components as needed. Confirm the hose routing matches the original path on the Chevrolet Corvette to avoid stress on the line after installation.

Quality Assurance

Dorman designs this assembly to match original fit and function using durable components for replacement service on specified vehicles. It is built to the stated pressure and temperature ranges for transmission cooler line use.