17-19 GM 6.6L L5P Duramax WP Dev 650HP Allison Transmission

Please note: A 5% cancellation fee will be charged for canceled WP Developments transmissions after purchase.
If lead time is a concern, please contact us BEFORE making your purchase to avoid a cancellation fee. 

WPD 650HP Series L5P Allison 1000 Features
For 2017-2019 GM 2500, GM 3500 Pickup trucks only

• HD friction stack up with added C3 clutches
• Perfect for play and work
• Triple disk converter stalled to you application
• New internal OEM wiring harness
• WPD towing/performance VB assembly
• WPD Reman high PSI pump
• Billet PTO covers with oiling mod
• New OEM Torrington bearings throughout the entire transmission
• New Allison brand seal kit
• This is our most popular build for the typical workhorse with bigger turbo and some added fuel upgrades  

WP Developments transmissions proudly carry a 2 year parts warranty.
For further details on the warranty, please view the warranty page- Click here

Warranty Disclaimer
By purchasing this product, you acknowledge and agree that the transmission selected is appropriately rated for your vehicle’s current power level. Exceeding the advertised power rating of the transmission will void the warranty in its entirety. You accept full responsibility for any resulting product failure or damage due to overpowering the unit and accept full responsibility for any associated costs or consequences. Additionally, all TCM calibrations must be certified by WP-Developments to maintain warranty coverage.

WP Developments: WPD-650HP-Allison-17-19