Quality and Experience are the two most important attributes to look for when shopping for a built trans. Here at Dan's Diesel Performance we have over 13 years experience in building Allisons and only use the best parts available on the market.

A built transmission is a big investment so we want to offer the customer the best built transmission in the market. All DDP Built Allisons start out as good cores and are fully disassembled. All components and housings are washed in our Cuda 2840 aqueous parts washer to rid of any dirt and contamination inside and out. Then all components are carefully inspected for flaws and wear.

Then they are assembled using the highest quality performance aftermarket and oem parts. We offer many different converter options and billet internals to meet your horsepower goals. The Goerend DK converter is the most popular unit we sell and stock. The Comp-2 is rated for 1,000hp+.
This transmission includes:

• Alto G3 clutches for C1 and C2
• Alto G3 Clutches for C3 and C4 with Kolene steels
• LML C3 and C4 return spring and piston assemblies
• TransGo and RatioTek Hydraulic Upgrades in valve body and pump housing
• Billet Input Shaft
• Billet Output Shaft
• Billet C2 Drum
• Billet P2 Planet
• Billet Intermediate shaft
• All New Gaskets and seals
• New Torrington Bearings
• Brand New Valve body
• New internal wiring harness
• New internal pressure switch manifold
• New Solenoids
• New NSBU switch
• Spin-on Filter with magnet
• Deep internal filter
• Rebuilt or New Pump
• Allison Deep Pan
• Signature PTO Covers
• A Core Transmission Is Required and Will Be Inspected Prior To Core Refund. Any transmissions with cracked or broken housings, damaged or missing internal hard parts such as planetaries, shafts, valve body, etc, will not receive the full core refund. Damage will be evaluated and an appropriate core refund amount will be issued. Core must be received within 45 days to receive full core refund.
• Transmissions Do Not Ship With Fluids

Five Year Warranty: Five Years, Unlimited Mileage coverage against defects in parts and workmanship. This covers defects in clutches, steels, pistons, Torque Converter, hydraulic upgrades, and workmanship assembly.