GDP Cooler Upgrade Kit (2011-2016) - Chevy LML

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Factory cooler setups recirculate soot and harmful gasses through your engine causing build-up and clogs, resulting in loss of performance and proven mechanical issues. GDP Cooler Upgrade Kits remove those concerns from the equation. GDP components install with an exact fit resulting in a longer lasting & better running truck, less turbo lag for better throttle response, cooler engine temps, less weight and a cleaner looking engine bay. Proudly Made in the USA.

GDP420022 , GDP421023 - 2011-2016 Chevrolet/GM 6.6L Duramax LML