Merchant Automotive Maximum Allison Transmission Work Series DIY Kit, LBZ | 2006 - 2007

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.