Sunsong 5801055 Automatic Transmission Oil Cooler Hose Assembly - Inlet from Radiator (Lower) to Transmission

Automatic Transmission Oil Cooler Hose Assembly

Sunsong 5801055 is an automatic transmission oil cooler hose assembly built for direct replacement on select Buick and Pontiac applications. It uses quick connect fittings at both ends and combines steel and rubber hose materials for the inlet line from the radiator to the transmission.

• Quick connect fittings on both ends for OE-style connection points
• Steel and rubber construction for the specified cooler line routing
• 39.5 in. (1003 mm) overall length
• Fits the inlet from radiator (lower) to transmission position
• Built to meet or exceed original equipment performance standards
• Operating temperature range from -40 to 350 degrees Fahrenheit

Fitment Details

Compatible with 2000-2005 Buick LeSabre, inlet from radiator (lower) to transmission. Compatible with 2000-2005 Buick Park Avenue, inlet from radiator (lower) to transmission. Compatible with 2000-2005 Pontiac Bonneville, inlet from radiator (lower) to transmission. This part cross-references Dorman OE Solutions 624-125 for the same application.

Product Overview

This transmission oil cooler hose assembly is engineered for the lower radiator-to-transmission inlet line used on select Buick LeSabre, Buick Park Avenue, and Pontiac Bonneville models. Sunsong 5801055 follows the original routing and connection style, helping restore the transmission cooler circuit with the correct length, fitting type, and material combination. The steel section and rubber section are specified to handle heat, fluid exposure, and underhood movement while maintaining the intended line path.

What It Helps Address

• Cracked or leaking transmission cooler hose
• Corrosion on the original cooler line
• Damaged quick connect ends
• Incorrect hose length or routing after prior repair
• Transmission fluid loss at the radiator-to-transmission connection

Installation Notes

Verify the vehicle’s cooler line routing and connection style before installation. This assembly is designed for the inlet from radiator (lower) to transmission position and should be matched to the original line path on the vehicle. Inspect surrounding brackets, grommets, heat shields, bushings, and sleeves during service and replace worn components as needed to restore the line system to proper condition.

Quality Assurance

Sunsong manufactures the tubing from high-grade steel with zinc electroplating for added resistance to rust and corrosion from humidity, road salt, water, and grime. The hose assembly is built to meet or exceed original equipment performance standards and is specified for a wide operating temperature range.