Product Overview
Allison Transmission P3 Planetary Rear Cover Output Seal forms a fluid seal at the rear cover and output yoke interface. Correct sealing at this location helps retain transmission oil, prevent contamination and maintain the hydraulic pressure required for transmission operation. It is supplied under part number 29556870. Previous part number: 29546233.
Key Features
- Allison Transmission P3 Planetary and Rear Cover Seal 29556870 / 29546233
- Application specific Allison sealing component
- Helps prevent transmission fluid leakage
- Supports correct hydraulic pressure retention
- Designed for the stated transmission joint
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


