body { font-family: Arial, sans-serif; line-height: 1.6; color: #333; margin: 20px; } h2 { font-size: 1.5em; color: #2c3e50; margin-top: 30px; border-bottom: 2px solid #eee; padding-bottom: 5px; } p { font-size: 1em; margin-bottom: 15px; } ul { padding-left: 20px; margin-bottom: 20px; } ul li { margin-bottom: 10px; list-style-type: disc; } table { width: 100%; border-collapse: collapse; margin-bottom: 30px; } table th, table td { text-align: left; padding: 10px; border: 1px solid #ddd; font-size: 0.95em; } table th { width: 40%; font-weight: bold; } table tr:nth-child(even) { background-color: #fafafa; } Transmission Oil Cooler Product Description This automatic transmission oil cooler is designed to match the function of an original cooler on specified vehicles. It is engineered to help maintain proper engine oil temperature when an original cooler has failed from heat, corrosion, or damage. Direct replacement - this automatic transmission fluid cooler is designed to match the function of an original cooler on specified vehicle Ideal solution - engineered to help maintain proper transmission fluid temperature when an original cooler has failed from heat, corrosion or damage Durable construction - designed and manufactured to strict specifications for reliable performance Trustworthy quality - backed by a team of product experts in the United States and more than a century of automotive experience Product Specifications Cooling Row Quantity: 8 Depth: 1.98 Grade Type: Standard Replacement Height: 5.6 Housing Color: Black Inlet Attachment Type: Male Threads Inlet Diameter: 5/8 in 18-unf-2b Material: Aluminum Mounting Hardware Included: No Outlet Attachment Type: Male Threads Outlet Diameter: 5/8 in 18-unf-2b Package Contents: Transmission Cooler; Mounting Bracket Package Quantity: 1 Packaging Type: Box Strap Width: 10.9 in OE Numbers 15821239 GENERAL MOTORS Fitment Year Make Model Configuration Positions Application Notes 2007-2010 GMC Sierra 3500 HD V8 403 6.6L (6599cc); Allison Trans. Auxiliary Buy with confidence – If you encounter any issues with your Dorman product, simply reach out to us. We are committed to ensuring your satisfaction and will assist with any return or exchange requests that meet our policy guidelines. Why Choose Dorman? Dorman is a trusted leader in OE-style replacement parts, offering precision-engineered solutions for reliable performance. Each part undergoes rigorous testing to ensure durability, safety, and a seamless fit. Designed as a cost-effective alternative to OEM parts, Dorman provides high-quality replacements backed by expert engineering. Choose Dorman for dependable, long-lasting automotive solutions.
