Arctic High Flow Allison Transmission Cooler

The DmaxStore Arctic High Flow Allison Transmission Cooler is engineered to significantly improve the cooling performance of your 2001-2005 GM 6.6L Duramax truck equipped with the Allison 1000 transmission. This heavy-duty unit is designed as a direct replacement for the stock cooler, offering substantially enhanced cooling capabilities to combat rising transmission fluid temperatures. Featuring a robust construction, the Arctic cooler boasts a core that is 56% thicker and 53% taller than the OE unit. Furthermore, it incorporates an impressive 188% more cooling rows, dramatically increasing its surface area for more efficient heat dissipation. This substantial upgrade ensures your transmission operates at optimal temperatures, even under demanding conditions such as towing or operating in mountainous terrain. Optional upgrades include stainless steel hardware for harsh environments and a discounted transmission line repair kit. DmaxStore recommends this cooler when rebuilding or upgrading your transmission to ensure longevity and efficiency. Please note that installation will result in a loss of approximately 1-2 quarts of transmission fluid; Transynd Transmission Fluid is recommended. While officially verified for the 6.6L Duramax with the Allison 1000, this cooler may fit 8.1L Gas models with the Allison 1000, but fitment is not guaranteed and may require custom modifications or additional fittings. Fitment has only been verified with aftermarket Fleece transmission lines; other aftermarket lines have not been verified to fit.