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The BD TorqueMaster Allison transmission and torque converter package for 2004.5–2006 Chevy LLY Duramax 4WD is a dyno‑tested, matched set built for towing, street or track use. It includes a billet input shaft, a triple‑disc torque converter with enhanced stall, BD's aluminum heavy‑duty deep pan to increase fluid capacity, and revised internals—higher clutch counts and upgraded components—intended to boost drivetrain durability under heavy loads.
BD Diesel Duramax Allison Transmission & Converter Package - Chevy 2004.5-2006 LLY 4WD
