Description
Maximum Allison Work Series DIY Kit, LB7 | 2003 - 2004
LB7 Work Series Transmission Kit Fits 2003–2004 GM LB7 Duramax with Allison 1000 5-Speed
Unlock the true potential of your 2003–2004 LB7 Duramax with our Work Series Transmission Kit . Built around the proven Allison 1000 5-speed platform, this kit elevates durability and performance with upgraded clutch packs, improved hydraulic pressure, and reinforced internal components — all engineered to handle demanding workloads and increased horsepower.
Product details
- Direct fit for 2003–2004 LB7 Duramax with Allison 1000 5-speed
- Ideal for stock or mildly modified trucks
- Increased clutch surface area for superior holding capacity
- Heavy-duty C1–C5 frictions and steels
- TransGo shift kit for improved shift quality and transmission longevity
- Merchant Automotive deep pan with filter lock system
- Includes all core bushings, bearings, gaskets, and valve body upgrades
- Allison 5-Speed Overhaul Kit (2003–2004 LB7)
Fitment / application
Maximum Allison Work Series DIY Kit, LB7 | 2003 - 2004
Confirm year, engine, transmission or axle configuration before ordering.
Manufacturer product reference: Specifications and fitment.
