RUDY'S UPGRADED ALLISON TRANSMISSION COOLER LINES 06-10 GM 6.6L DURAMAX DIESEL. Rudy's Upgraded Allison Transmission Cooler Lines 06-10 GM 6.6L Duramax Diesel. These heavy-duty, high-flow, flexible transmission lines are just what you need for trouble-free performance from your Allison Transmission. 2006 Chevrolet/GMC 6.6L Duramax Diesel (w/ Allison Transmission ONLY) LBZ.
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