2001-2005 Chev/GM 5 speed Allison Automatic Transmission

North American Powertrain Components Re-Manufactured Allison 5 Speed Automatic Transmission for 2001-2005 Duramax Engines.

 All units are dyno-tested on our in-house Superflow transmission dynamometer before being shipped out.

Stock Rebuild Includes:

• Factory Torque Converter
• Overhaul Gasket Kit with gaskets, seals and rings
• New Washers
• New Bushings
• New High Flow Transmission Filters
• NAPC Valve Body 

450 Series Heavy Hauler Rebuild includes all the above parts plus:

• Single Disc Billet Torque Converter
• NAPC Lockup Boost Kit
• Extra Friction in C1 Clutch Pack
• Extra Friction in C2 Clutch Pack
• Extra Friction in C3 Clutch Pack
• NAPC Pressure Regulator Spring Shim
• NAPC Pressure Switch Manifold
• NAPC A&B Trim Solenoids
• NAPC TCC F Trim Solenoid
• NAPC E Shift Valve Spring
• NAPC F Shift Valve Sleeve
• NAPC Molded Pistons
• Kolene Steels
• NAPC Valve Body with Elevated Line Pressure and Shift Kit

Race Series Heavy Hauler Rebuild includes all the above parts plus:

• Billet Input Shaft
• Triple Disc Billet Torque Converter
• NAPC Valve Body custom built for application