Product Overview
Allison Transmission Torque Converter Lockup Piston Assembly is the piston that applies the torque converter lockup clutch. When commanded, it connects the converter cover to the damper and replaces the fluid coupling with a near direct mechanical drive, reducing slip and heat generation. It is supplied under part number 29542016. Previous part number: 29500939.
Key Features
- Applies the torque converter lockup clutch
- Creates a near 1 to 1 mechanical drive connection
- Connects the converter cover to the damper
- Reduces converter slip and fluid temperature
- Supplied as one complete piston assembly
Compatibility / Fitment
Compatibility depends on the Allison transmission model, serial number, control generation and build specification. Please provide the transmission serial number before ordering so the part number and application can be checked.
Please message us with your engine serial number / Model / Type / Code to check compatibility.
Why Buy Genuine OEM Parts
- Designed for the intended Allison transmission application
- Supports correct fit and operating function
- Provides traceable OEM part identification
- Helps maintain the transmission to the specified component standard
Why Buy From Mitchell Powersystems
- Genuine OEM parts supplied with technical support
- UK based parts supply for professional workshops and operators
- Help available to confirm the correct part using your equipment details
- Trusted supplier for diesel engine, transmission and drivetrain parts



