The Chelsea 252DDKUX-B51129 or 252DDKUXB51129 is a 252 Series Power Take-Off assembly designed for Allison and RAM automatic transmissions. It mounts with a 6-bolt pattern and uses hydraulic shift activation. Output is through a 1-inch round shaft with a keyed connection. Intermittent torque is rated at 120 lb-ft (163 Nm); verify actual ratings on the Chelsea application pages for your specific installation. Shaft power is 11 HP at 500 RPM and 23 HP at 1000 RPM, with a maximum output of 25 HP. A single hose connection and integrated cartridge valve simplify installation, and weather-tight electrical connectors protect the hydraulic shift circuit. Call us to confirm proper fit for your transmission and chassis.
The Chelsea 252 Series PTO is engineered for compact installation on Allison and RAM-equipped truck chassis. The housing is sized to pass through a floor access panel without requiring exhaust system removal. The integrated cartridge valve eliminates the need for a remote solenoid and reduces hose routing complexity to a single connection. The 252 Series is suited for aerial, dump, tow and recovery, and tire service truck applications. Compatible Parker pumps with flows from 1.6 gpm to 8.2 gpm at 1000 RPM are available and can be ordered together with the PTO as a single part number.
Features
Hydraulic shift activation with single hose connection and integrated cartridge valve
6-bolt mounting pattern for Allison and RAM automatic transmissions
1-inch round output shaft with key
Intermittent torque: 120 lb-ft (163 Nm) - check application pages for verified ratings
Shaft power: 11 HP at 500 RPM, 23 HP at 1000 RPM
Controlled Compression Interface Gasket and weather-tight electrical connectors
Tech Specs
- Shift Type: Hydraulic
- Mounting Type: 6-Bolt
- Output Shaft Type: 1" Round with Key
- Transmission Manufacturer: Allison, RAM
- Intermittent Torque: 120 lb-ft / 163 Nm (check application pages for actual torque ratings)
- Output Power: 25 HP and below / 20 kW and below
- Shaft Power: 11 HP at 500 RPM, 23 HP at 1000 RPM / 9 kW at 500 RPM, 17 kW at 1000 RPM
Additional Information
The Chelsea 252 Series PTO is engineered for compact installation on Allison and RAM-equipped truck chassis. The housing is sized to pass through a floor access panel without requiring exhaust system removal. The integrated cartridge valve eliminates the need for a remote solenoid and reduces hose routing complexity to a single connection. The 252 Series is suited for aerial, dump, tow and recovery, and tire service truck applications. Compatible Parker pumps with flows from 1.6 gpm to 8.2 gpm at 1000 RPM are available and can be ordered together with the PTO as a single part number.
