Dorman 800-727 Automatic Transmission Oil Cooler Line Connector

Automatic Transmission Oil Cooler Line Connector

Dorman 800-727 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 fitting design, it matches the fit and function of a damaged original connector to help return the system to leak-free operation.

Compatible with select Cadillac Escalade, Chevrolet Silverado, GMC Sierra, Tahoe, Yukon, and related applications, this Dorman 800-727 transmission fitting is a direct replacement for common OE-style cooler line connections.

Key Features

• Aluminum construction for a durable replacement connection
• Straight fitting angle for the specified cooler line routing
• Quick disconnect end on one side for OE-style attachment
• Male thread end on the other side for secure mating
• Designed to restore the transmission-to-cooler fluid path
• Cross-references AMS Automotive 4175 and OE number 19210848 for the same application

Detailed Description

This automatic transmission oil cooler line connector is engineered for vehicles that use a quick-disconnect cooler line connection at the transmission and a male-thread connection at the oil cooler side. Dorman 800-727 is built to match the original connector’s fit and function, helping maintain proper transmission fluid flow and sealing at the cooler line junction. It is a practical replacement for worn, damaged, or leaking transmission oil cooler line fittings on applications such as Chevrolet Silverado 1500, GMC Sierra 1500, Cadillac Escalade, and GMC Yukon.

Fitment coverage includes 1999-2014 model years across multiple GM trucks and SUVs, including 2010-2014 Chevrolet Silverado 2500 HD, 2010-2014 GMC Sierra 3500 HD, 2000-2006 Chevrolet Tahoe, and 2007 Chevrolet Silverado 1500 Classic. The part number 800-727 is commonly searched for transmission oil cooler line connector replacement on these vehicles.

Common Problems This Part Can Address

• Transmission fluid leaking at the oil cooler line connection
• Cracked, corroded, or damaged original cooler line fitting
• Loose or unreliable connection between the transmission and cooler line
• Improper sealing at the transmission oil cooler line junction
• Need for an OE-style replacement fitting on GM trucks and SUVs

Installation Notes and Tips

Verify the fitting style, thread size, and line connection type before installation. This connector uses a 0.375 in quick-disconnect end and a 0.563 in male-thread end, with no thread sealer present. Confirm the cooler line and transmission ports are clean and undamaged before assembly to help achieve a proper seal.

For fitment searches, this part is commonly referenced for 2010-2014 Cadillac Escalade, 2010-2014 Chevrolet Tahoe, and 2010-2014 GMC Yukon applications, along with earlier Silverado, Sierra, Suburban, and Avalanche models.

Quality Assurance

Dorman manufactures replacement components to match original equipment fit and function. This connector is made from quality materials and is intended to restore dependable cooler line performance in the specified applications.