Dorman 624-559 Automatic Transmission Oil Cooler Hose Assembly - Outlet Tube from Transmission (Passenger Side)

Reliable Automatic Transmission Oil Cooler Hose Assembly

The Dorman 624-559 automatic transmission oil cooler hose assembly is engineered to provide a durable and precise fit for select Buick, Chevrolet, and GMC models. Designed with molded metal construction and male quick disconnect ends, this hose assembly ensures secure fluid transfer and reliable performance under varying temperature and pressure conditions.

• Durable molded metal hose assembly in black and silver colors
• 41-inch length with male quick disconnect fittings on both ends
• 7 mm inside diameter for optimal fluid flow
• Maximum working pressure of 1000 psi for high-demand applications
• Operates reliably between -40°F and 302°F
• Non-flexible design for consistent shape and fit
• Does not contain springs or include gaskets/seals

Detailed Product Description

The Dorman 624-559 transmission oil cooler hose assembly is specifically designed for use in automatic transmission cooling systems of Buick Envoy, Chevrolet Trailblazer, GMC Envoy XL, and other compatible models. Its molded metal construction provides a rigid, non-flexible hose shape that maintains integrity under high pressure and temperature extremes. Both ends feature male quick disconnect fittings, allowing for straightforward installation and secure connections without the need for additional sealing components. The hose measures 41 inches in length with a 7 mm inside diameter, supporting efficient transmission fluid flow and heat dissipation. Rated for a maximum working pressure of 1000 psi and operating temperatures from -40°F to 302°F, this hose assembly is built to withstand the demanding conditions of transmission cooling systems.

Compatible Vehicle Applications

• Buick Envoy, Envoy XL, Envoy XUV
• Chevrolet Trailblazer, Trailblazer EXT, SSR
• GMC Envoy, Rainier

Common Issues Addressed by This Hose Assembly

• Transmission fluid leaks due to worn or damaged hoses
• Overheating caused by inefficient transmission fluid cooling
• Pressure loss in transmission cooling lines
• Corrosion or cracking of original hose assemblies
• Improper fit or connection failures with aftermarket hoses

Installation Notes and Tips

Ensure the vehicle is cool and transmission fluid pressure is relieved before removing the old hose assembly. The male quick disconnect fittings on both ends allow for a straightforward replacement without additional sealing components. Verify the hose routing matches the original to prevent kinks or interference with other engine components. Inspect surrounding fittings and clamps for wear during installation.

Quality Assurance and Warranty

Dorman manufactures this transmission oil cooler hose assembly to meet or exceed OEM specifications for fit, form, and function. While specific warranty details are not provided, Dorman products typically undergo rigorous quality control to ensure durability and reliable performance in automotive applications.