Mishimoto 99-13 Chevrolet Silverado / GMC Sierra Transmission Cooler

The Mishimoto 99-13 Chevrolet Silverado / GMC Sierra Transmission Cooler is a high-performance cooling solution designed to reduce transmission heat buildup. Constructed with a stacked-plate design, this cooler offers maximum durability and efficient heat transfer. Its massive core is 521% larger than stock, with a 278% increase in frontal area, providing significant cooling capacity for demanding applications such as towing, off-road driving, or heavy-duty use. Internal fins and louvered external fins circulate air and fluid effectively throughout the core, ensuring optimal thermal management. The cooler includes precision-machined -6ORB quick-disconnect fittings for direct connection to stock lines or the option to use -6AN lines. A relocation bracket for the ambient air temperature sensor and an adjustable mounting bracket facilitate straightforward installation, typically within an hour. Like all Mishimoto products, it is backed by a lifetime warranty and accident protection, ensuring reliable performance.

Designed for 1999-2013 GMT800 and 900 Chevy Silverado and GMC Sierra models, this transmission cooler is suitable for a variety of applications, including daily driving, towing, and fleet use. It connects directly to the stock transmission lines, serving as an effective upgrade or replacement to improve cooling efficiency. Compatible with trucks equipped with the specified engine configurations, it enhances transmission longevity and performance under heavy loads or extended operation. The kit includes the cooler, quick-disconnect fittings, and mounting hardware, making it a comprehensive solution for maintaining optimal transmission temperatures. This product is ideal for owners seeking a durable, high-capacity cooling upgrade to support demanding driving conditions.