Dorman 624-129 Automatic Transmission Oil Cooler Hose Assembly - Upper

Automatic Transmission Oil Cooler Hose Assembly

Dorman 624-129 is a replacement automatic transmission oil cooler hose assembly for select Buick Lucerne applications. It routes transmission fluid between the transmission and the oil cooler using metal and rubber construction for a secure, leak-resistant connection.

Compatible with 2006-2008 Buick Lucerne, upper, this transmission line is built for direct replacement service where the original cooler hose has worn, cracked, or begun to leak. Part number 624-129 is also referenced by interchange number 25762690 and Sunsong 5801138 for the same application.

Key Features

• Replacement automatic transmission oil cooler hose assembly
• Metal and rubber construction for fluid transfer durability
• Male quick disconnect ends on both sides
• Flexible hose design for routing in the engine bay
• Rated for 100 psi maximum working pressure
• Operating temperature range: -40°F to 329°F
• Natural hose color
• Fits 2006-2008 Buick Lucerne, upper

Detailed Description

This Dorman transmission cooler hose assembly is engineered to replace the original upper line on 2006-2008 Buick Lucerne vehicles. The combination of metal and rubber materials helps maintain a stable fluid path between the transmission and the transmission oil cooler, while the quick-disconnect ends support a secure connection at the factory-style attachment points. If you are searching for a 2006 Buick Lucerne upper transmission oil cooler hose, 2007 Buick Lucerne transmission line, or 2008 Buick Lucerne automatic transmission cooler hose, part number 624-129 matches the listed application.

What It Helps Fix

• Transmission fluid leaks at the cooler hose connection
• Cracked, hardened, or deteriorated hose material
• Restricted fluid transfer between the transmission and cooler
• Damaged or corroded original transmission line assembly
• Loss of proper transmission cooling due to a failing hose

Installation Notes and Tips

Verify the vehicle application before installation and confirm the upper line routing on the 2006-2008 Buick Lucerne. Inspect the mating quick-disconnect fittings and surrounding cooler connections for wear, corrosion, or debris before attaching the new line. No gasket or seal is included, so reuse or replacement of related sealing components should be confirmed during service. Ensure the line is routed without kinks or contact points that could affect fluid flow.

Quality Assurance

Dorman replacement parts are built to match the service needs of the original system using application-specific materials and construction. This hose assembly is designed to provide leak-resistant fluid delivery between the transmission and cooler under the listed pressure and temperature ranges.