LBZ Work Series Transmission Kit
Fits 2006–2007 GM LBZ Duramax with Allison 1000 6-Speed
Upgrade the performance and durability of your 2006–2007 LBZ Duramax with our Work Series Transmission Kit. Built around the proven Allison 1000 6-speed platform, this kit is engineered for reliability under heavy loads and increased horsepower.
Whether your truck is stock or running mild performance upgrades, this kit offers a substantial boost in strength and shift quality. It's a direct-fit solution designed for daily driving, towing, and work applications — and it's the same configuration we trust on our own in-house builds.
Kit Highlights
- Designed specifically for 2006–2007 LBZ Duramax with Allison 1000 6-speed
- Great for stock and mildly modified trucks
- Increased clutch surface area improves holding capacity
- Heavy-duty frictions and steels (C1–C5)
- TransGo Jr. shift kit for crisp shifts and longer life
- Merchant Automotive deep pan with filter lock system
- Includes all essential gaskets, bushings, bearings, and valve body upgrades
Kit Contents
Transmission Internals
- Allison T2 Bearing
- Allison 1000 T3–T5 Bearing
- Allison T4 Bearing
- Allison 1000 Front Pump Bushing
- Allison Stator Support Bushing
- Allison 1000 T1 & T6 Bearing x2
- Allison T5 Bearing
- Allison 6-Speed Overhaul Kit
- Transfer Case to Transmission Adapter Gasket
- Pipe Thread Sealant Tape
- Allison Cut Back Valve
- Allison 1000 P1 Drive Flange
Clutch Packs
- C1 Friction x6
- C2 Friction x6
- C5 Friction x6
- C3/C4 Friction x9
- Alto Allison Piston Kit (2006–2010)
- C1 Apply Plate x6
- C2 Steels x7
- C3/C4 Apply Pressure Plate x2
- C3/C4 Steels x7
- C5 Steels x6
Upgrades & Components
- Allison 1000 Deep Pan Kit with Merchant Automotive Deep Filter Lock
- PTO Billet Side Cover, Work Series x2
- Allison Pressure Switch Assembly
- Valve Body Kit
- Allison 1000 Pass-Through Connector Body & O-Ring
- TransGo Allison Jr. Shift Kit
- Transmission Pressure Regulator Spring Service Tool
- Trim Springs “A” & “B” x2
Built for strength, tuned for performance — the Work Series Transmission Kit gives your LBZ the solid foundation it needs for confident shifting and dependable power delivery, whether you're hauling loads, commuting daily, or running light upgrades.
