Dorman 624-522 Automatic Transmission Oil Cooler Hose Assembly - Upper

Transmission Cooler Hose Assembly for GM Trucks

Dorman 624-522 is an automatic transmission oil cooler hose assembly built with metal and rubber components for fluid transfer between the transmission and the transmission oil cooler. It is a direct-fit replacement for select Chevrolet Silverado 1500, GMC Sierra 1500, and related GM full-size SUV applications with upper-line routing.

Key Features

• Automatic transmission oil cooler hose assembly for upper-line routing
• Metal and rubber construction for leak-resistant fluid delivery
• Molded hose shape with hose barb ends on both sides
• 35-inch length with natural hose color
• Rated for 100 psi maximum working pressure
• Operating range from -40 Deg. F to 328 Deg. F
• Flexible design for routing in tight engine bay and chassis locations
• Cross-references OE numbers 5801436 and 15779546 for the same application

Detailed Description

This Dorman transmission line is engineered for vehicles that need a replacement upper automatic transmission cooler hose with the correct molded routing and connection style. Part number 624-522 uses hose barb ends, a metal-and-rubber construction, and a leak-focused design to move transmission fluid between the transmission and cooler on select GM platforms. It is a practical replacement for Chevrolet Silverado 1500 and GMC Sierra 1500 models, along with compatible Chevrolet Suburban 1500, Tahoe, Avalanche, GMC Yukon, and Yukon XL 1500 applications listed below.

Compatible With: Fits 2007-2013 Chevrolet Silverado 1500, upper; Fits 2007-2013 GMC Sierra 1500, upper; Fits 2010 Chevrolet Suburban 1500, upper; Fits 2007-2009 Chevrolet Suburban 1500, upper; Fits 2007-2009 Chevrolet Tahoe, upper; Fits 2007-2009 GMC Yukon, upper; Fits 2007-2008 Chevrolet Avalanche, upper; Fits 2007-2008 GMC Yukon XL 1500, upper.

Common Problems This Part Can Address

• Transmission cooler hose seepage or fluid leakage at the line assembly
• Cracked, hardened, or damaged cooler hose material
• Incorrect routing or fitment from a worn original upper line
• Loss of transmission fluid flow between the transmission and cooler
• Service replacement for OE-style cooler line part numbers 5801436 and 15779546

Installation Notes and Tips

Verify the vehicle’s RPO code and transmission configuration before ordering, especially for 2007-2013 Chevrolet Silverado 1500 and GMC Sierra 1500 models without RPO Code KNP. This upper hose assembly is listed for specific GM applications, including 2010 Chevrolet Suburban 1500 with 4L60-E transmission and no KNP heavy-duty cooling system. Confirm hose routing, end style, and length against the original line before installation.

Quality Assurance

Dorman manufactures this replacement transmission cooler hose assembly with metal and rubber components to support leak-free fluid transfer in the specified applications. Part number 624-522 is built as a direct replacement for the listed GM fitments and OE cross-reference numbers.