The Merchant Automotive Allison 10-Speed PTO Cover to Engine Stand Adapter lets you mount an Allison 10L1000 10-speed transmission on a standard engine stand for teardown, rebuild and inspection. The adapter bolts to the transmission at the PTO cover opening and mounts to your engine stand's head. It securely supports the transmission and lets you rotate it to any position, so you can work on the valve body, clutch packs and rear section at a comfortable height without wrestling the case on a bench or the floor.

Key Features

• Mounts an Allison 10L1000 10-speed transmission to a standard engine stand
• Bolts on at the PTO cover opening
• Supports the transmission securely and allows full rotation
• Made by Merchant Automotive

Benefits

• Safer and easier than working on a transmission on the bench or floor
• Rotate the case to reach every section during a rebuild
• Uses the engine stand you already own, with no dedicated transmission fixture needed

Frequently Asked Questions

Will this fit my 6-speed Allison 1000?

No. This adapter is made only for the Allison 10L1000 10-speed transmission used on 2020 and newer Duramax trucks. It does not fit the 5-speed or 6-speed Allison 1000.

How does it attach to the transmission?

It bolts to the transmission at the PTO cover opening, then mounts to the head of a standard engine stand.

Do I need a special transmission stand?

No. The adapter works with a standard engine stand, so there's no need to buy a dedicated transmission holding fixture.

Can I rotate the transmission once it's mounted?

Yes. The adapter lets the transmission rotate on the stand, so you can position it for whatever you're working on.

Fitment

• Allison 10L1000 10-speed transmissions
• 2020 - 2026 Chevrolet Silverado 2500HD / 3500HD 6.6 Liter Duramax L5P
• 2020 - 2026 GMC Sierra 2500HD / 3500HD 6.6 Liter Duramax L5P
• Does not fit the 5-speed or 6-speed Allison 1000 (2001 - 2019)

What's Included

• (1) Merchant Automotive Allison 10-Speed PTO Cover to Engine Stand Adapter

Details:

• Engine Manufacturer: Duramax
• Liter: 6.6 Liter
• Engine Designation: L5P
• Engine Years: 2020-2026
• Transmission Code: Allison 10L1000

Applications:

• 2020-2026 Silverado/Sierra 2500HD/3500HD L5P