Sunsong 5801137 Automatic Transmission Oil Cooler Hose Assembly - Transmission to Radiator (Upper)

Automatic Transmission Oil Cooler Hose for GM Vans

Sunsong 5801137 is an automatic transmission oil cooler hose assembly built for direct replacement on select Chevrolet Express and GMC Savana vans. It uses quick connect fittings and a steel-and-rubber construction to restore the transmission-to-radiator upper cooler line on the listed applications.

Key Features

• Direct-fit automatic transmission oil cooler hose assembly
• Quick connect fittings on both ends for the listed GM applications
• Steel and rubber hose construction
• 55-inch length for the specified routing
• Operating temperature range from -40 to 350 degrees Fahrenheit
• High-grade steel tubing with zinc electroplating for corrosion resistance
• Built to meet or exceed original equipment performance standards

Product Details

This Sunsong transmission cooler hose assembly is engineered for 2003-2004 Chevrolet Express 2500, Chevrolet Express 3500, GMC Savana 2500, and GMC Savana 3500 models in the transmission to radiator upper position. It is a fitment-specific replacement for the factory oil cooler line and is built with pre-bent tubing to match the original routing on the vehicle. The steel tubing is zinc-coated to resist rust and corrosion from humidity, road salt, water, and grime. Part number 5801137 also cross-references Dorman OE Solutions 624-149 for the same application.

Common Problems This Part Addresses

• Leaking transmission cooler hose connections
• Corroded or rusted cooler line tubing
• Cracked or deteriorated rubber hose sections
• Improper routing from a damaged original line
• Transmission fluid loss at the upper radiator cooler connection

Installation Notes and Tips

Verify the vehicle year, make, model, and radiator configuration before installation. This part fits 2003 Chevrolet Express 2500, transmission to radiator (upper); 2003 Chevrolet Express 3500, transmission to radiator (upper); 2003 GMC Savana 2500, transmission to radiator (upper); 2003 GMC Savana 3500, transmission to radiator (upper); 2004 Chevrolet Express 2500, transmission to radiator (upper), 1st design, radiator without quick connect fitting for lower cooling hose; 2004 Chevrolet Express 3500, transmission to radiator (upper), 1st design, radiator without quick connect fitting for lower cooling hose; 2004 GMC Savana 2500, transmission to radiator (upper), 1st design, radiator without quick connect fitting for lower cooling hose; and 2004 GMC Savana 3500, transmission to radiator (upper), 1st design, radiator without quick connect fitting for lower cooling hose. Inspect the mating quick connect ports and surrounding brackets before installation to confirm the original routing and connection style match the replacement line.

Quality Assurance

Sunsong manufactures this hose assembly with OE-style fitment, pre-bent tubing, and corrosion-resistant steel construction to meet or exceed original equipment performance standards. Part number 5801137 is engineered for temperature extremes and long-term service in transmission cooling applications.