Dorman 800-613 Automatic Transmission Oil Cooler Line Connector

Automatic Transmission Oil Cooler Line Connector

This Dorman automatic transmission oil cooler line connector restores the connection between the transmission and the oil cooler when the original fitting is damaged or leaking. Built from metal with a straight fitting design, it matches the fit and function needed for a secure, leak-free repair on select Chevrolet Silverado HD and GMC Sierra HD trucks.

Part number 800-613 is a direct replacement style connector for applications that use a quick disconnect on one end and a male thread on the other. It is a practical solution for transmission cooler line service on Silverado 2500 HD, Silverado 3500 HD, Sierra 2500 HD, and Sierra 3500 HD models.

Key Features

• Metal construction for transmission cooler line service
• Straight fitting angle for OE-style routing
• Quick disconnect end on one side and male thread on the other
• Restores the connection between the transmission and oil cooler
• Matches the fit and function of the original connector
• Fits select Chevrolet Silverado HD and GMC Sierra HD applications

Detailed Description

Dorman 800-613 is an automatic transmission oil cooler line connector made to replace a damaged original fitting and restore proper fluid transfer between the transmission and the oil cooler. The metal body supports a durable repair, while the straight configuration helps maintain the factory line path. This connector uses a 1/2 in quick disconnect end and a 0.563 in male thread end, with no thread sealer present.

Compatible With 2003-2012 Chevrolet Silverado 2500 HD, 2007-2012 Chevrolet Silverado 3500 HD, 2003-2012 GMC Sierra 2500 HD, and 2007-2012 GMC Sierra 3500 HD applications, this part number 800-613 is also listed for 2003-2006 Chevrolet Silverado 3500 and 2003-2006 GMC Sierra 3500, plus 2007 GMC Sierra 3500 Classic. This part cross-references 88996645 for the same application.

What It Helps Fix

• Transmission cooler line leaks at the connector
• Cracked, worn, or damaged OE fittings
• Poor connection between the transmission and oil cooler
• Fluid loss caused by a failed line connector
• Service issues on Silverado HD and Sierra HD cooler line connections

Installation Notes and Tips

Verify the line end sizes, quick disconnect style, and male thread connection before installation. Inspect the mating cooler line and transmission port for wear, corrosion, or debris so the new connector seats correctly. Because thread sealer is not present, use the proper sealing method specified for the vehicle application.

Quality Assurance

Dorman manufactures this connector as a replacement part that matches the original fit and function for the listed applications. The metal construction and OE-style connection design support a repair focused on restoring leak-free transmission cooler line performance.