LMM Duramax Allison Transmission

The 2007.5-2010 LMM Duramax paired with the legendary Allison transmission delivers unmatched strength and durability. Whether you're rebuilding, upgrading, or replacing, our selection of high-quality Allison 1000 transmission components is built to handle towing, performance tuning, and daily driving with confidence. From complete transmissions to internal upgrades, trust in proven performance engineered specifically for your LMM Duramax.

Complete LMM Duramax Allison Transmission Parts Directory

• Transmission Pans: Deep pans and aluminum upgrades to add fluid capacity and run cooler under load.
• Full Transmission: Complete, built Allison transmissions ready to drop in and go.
• Flex Plates: Heavy-duty and billet flex plates built to resist cracking and warping.
• Allison Controllers & Electronics: Shift-firmness controllers and lockup electronics to fine-tune shift behavior.
• Allison Torque Converters: Triple disc and billet converters matched to your stall speed and driving style.
• Transmission Cooling: Coolers and lines to keep fluid temps in check under heavy towing.
• Transfer Case: Replacement and rebuild parts to keep power flowing to all four wheels.
• Transmission Filters: Deep and shallow pan filters to keep fluid clean between services.
• Automatic Transmission Components: Internal shafts, bearings, and clutch upgrades for rebuilds and reinforcement.