The Chelsea 252GMHVX-B5P71 or 252GMHVXB5P71 is a hydraulic-shift power take-off assembly from the Chelsea 252 Series, designed for Allison 1000/2000/2400 series automatic transmissions and RAM truck applications. It mounts via a 6-bolt pattern and delivers power through a 1-inch round output shaft with a 1/4-inch key. Shaft output is rated at 11 HP at 500 RPM and 23 HP at 1000 RPM, with intermittent torque in the 101-200 lb-ft range (check application pages for actual torque ratings). A single hose connection with an integrated cartridge valve simplifies installation, and weather-tight electrical connectors protect the shift circuit. The compact housing is built to fit through a floor access panel without dropping the exhaust system. Call us to confirm proper fit for your specific transmission and chassis.
The Chelsea 252 Series PTO is suited for aerial, vocational, municipal, tow and recovery, tire service, and dump truck applications. The compact housing is engineered to slip through the floor access panel without requiring exhaust system removal, reducing installation time. When ordered with a compatible Parker pump, the PTO and pump ship together as a single part number. Pump flow options for the 252 Series range from 1.6 gpm to 8.2 gpm at 1000 RPM. The part is also referenced as SP252GMHVX-B5P71 in some distributor catalogs.
Features
Hydraulic shift operation with single hose connection and integrated cartridge valve
6-bolt mounting pattern for Allison 1000/2000/2400 series and RAM truck transmissions
1-inch round output shaft with 1/4-inch key
Shaft output: 11 HP at 500 RPM, 23 HP at 1000 RPM; intermittent torque 101-200 lb-ft
Controlled Compression Interface Gasket for a reliable seal at the transmission face
Weather-tight electrical connectors protect the hydraulic shift circuit
Tech Specs
- Shift Type: Hydraulic
- Mounting Type: 6-Bolt
- Output Shaft Type: 1" Round with 1/4" Key
- Transmission Compatibility: Allison 1000/2000/2400 Series, RAM
- Intermittent Torque: 101-200 lb-ft / 101-200 Nm (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
- Continuous Operation: Yes, with 30% de-rating
Additional Information
The Chelsea 252 Series PTO is suited for aerial, vocational, municipal, tow and recovery, tire service, and dump truck applications. The compact housing is engineered to slip through the floor access panel without requiring exhaust system removal, reducing installation time. When ordered with a compatible Parker pump, the PTO and pump ship together as a single part number. Pump flow options for the 252 Series range from 1.6 gpm to 8.2 gpm at 1000 RPM. The part is also referenced as SP252GMHVX-B5P71 in some distributor catalogs.
