Product Overview
Allison Transmission Retarder Solenoid Valve Assembly controls the air and oil action used to apply the transmission retarder. When commanded by the TCM, the valve allows vehicle air pressure to stroke the retarder accumulator so stored oil is delivered to the retarder cavity. It is supplied under part number 29557354. Previous part number: 29555434.
Key Features
- Solenoid Retarder Valve Allison Transmission 29557354 / 29555434
- Controls retarder accumulator operation
- Responds to commands from the transmission control module
- Helps provide controlled transmission braking
- Reduces reliance on the service brakes on descents
Compatibility / Fitment
Fitment 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, connection 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