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Mishimoto's direct-fit transmission cooler for 2003–2005 Chevrolet and GMC 6.6L Duramax (LB7/LLY) employs a stacked-plate core to deliver substantial cooling gains. It increases core volume by about 174% and fin surface area by about 192% over the stock unit. CNC-machined adapters and direct-fit brackets and hoses make installation straightforward while improving transmission thermal capacity.
Mishimoto 03-05 Chevrolet / GMC 6.6L Duramax (LB7/LLY) Transmission Cooler
