Dorman 800-637 Automatic Transmission Oil Cooler Line Connector

Transmission Oil Cooler Line Connector Overview

Dorman 800-637 is an automatic transmission oil cooler line connector built to restore the connection between the transmission and the oil cooler. Made from aluminum with a straight profile, it matches the fit and function of the original connector for leak-free service on the transmission side.

Compatible with select Buick, Chevrolet, Pontiac, Saturn, and Oldsmobile models, this Dorman 800-637 transmission line connector is a direct-fit replacement for vehicles such as the Chevrolet Impala, Pontiac Grand Prix, and Buick LaCrosse.

Key Features

• Aluminum construction for transmission cooler line service
• Straight fitting design for a direct connection path
• Quick disconnect end on one side for OE-style attachment
• Male thread end on the other side for secure mating
• Restores the connection between the transmission and oil cooler
• Cross-references GM 24236555 for the same application

Detailed Description

The Dorman 800-637 is an automatic transmission oil cooler line connector engineered to replace a damaged original connector and restore proper fluid transfer between the transmission and the cooler. Its aluminum body, straight configuration, and OE-style end types support a precise connection where the cooler line meets the transmission. This part number 800-637 is a practical replacement when the original connector is cracked, leaking, or no longer sealing correctly.

Vehicle coverage includes 2004-2011 Chevrolet Impala, 2004-2007 Chevrolet Monte Carlo, 2004-2008 Pontiac Grand Prix, 2005-2011 Buick LaCrosse, and 2006-2009 Pontiac G6. It also applies to other listed Buick, Chevrolet, Pontiac, Saturn, and Oldsmobile models with the same transmission-side long fitting configuration.

What It Helps Fix

• Transmission cooler line leaks at the connector
• Loose or damaged quick-disconnect attachment points
• Fluid loss caused by a failed OE connector
• Poor sealing between the transmission and oil cooler line
• Corrosion or wear at the original aluminum connector

Installation Notes and Tips

Verify the fitting size, end type, and vehicle application before installation. This connector uses a quick disconnect end and a male thread end, with no thread sealer present. Confirm the transmission-side long fitting layout on the vehicle before replacing the original part. For best results, inspect the cooler line and surrounding sealing surfaces for damage before assembly.

Quality Assurance

Dorman manufactures this connector from quality materials to match the fit and function of the original equipment part. It is intended to restore leak-free performance in the transmission oil cooler line connection.