The Chelsea 252 Series Power Take-Off, part number 252RMKUX-B51462 or 252RMKUXB51462, is a hydraulic-shift PTO built for Allison 1000/2000/2400 series automatic transmissions and RAM truck applications. It mounts via a 6-bolt pattern and delivers shaft power of 11 HP at 500 RPM and 23 HP at 1000 RPM, with an intermittent torque rating of 120 lb-ft (163 Nm) - check the Chelsea application pages for your specific torque requirement. The 1-inch round output shaft with keyway pairs with a wide range of Chelsea-compatible Parker pumps. Installation is simplified by a single hydraulic hose connection and an integrated cartridge valve, eliminating the need for remote solenoids and additional hose routing. Weather-tight electrical connectors and a Controlled Compression Interface Gasket are included as standard. Confirmed applications include aerial equipment, tow and recovery, tire service trucks, and dump trucks. Call us to confirm proper fit for your specific chassis and transmission build.
The Chelsea 252 Series is designed for vocational applications including aerial equipment, tow and recovery, tire service trucks, and dump trucks. The housing profile allows installation through a floor access panel without dropping the exhaust system. Compatible Parker pumps are available with flows from 1.6 gpm to 8.2 gpm at 1000 RPM, and the PTO and pump can be ordered together under a single part number. Contact Pro Gear and Transmission to confirm the correct pump pairing and transmission fitment for your build.
Features
Hydraulic shift operation with single hose connection and integrated cartridge valve
6-bolt mounting pattern for Allison 1000/2000/2400 series and RAM automatic transmissions
1-inch round output shaft with key
Intermittent torque rating: 120 lb-ft (163 Nm) - verify against Chelsea application pages
Shaft power: 11 HP at 500 RPM, 23 HP at 1000 RPM
Controlled Compression Interface Gasket and weather-tight electrical connectors included
Tech Specs
- Shift Type: Hydraulic
- Mounting Type: 6-Bolt
- Transmission Manufacturer: Allison (1000/2000/2400 Series), RAM
- Output Shaft Type: 1" Round with Key
- Intermittent Torque: 120 lb-ft / 163 Nm (Check Application Pages for Actual Torque Ratings; range 101-200 lb-ft / 101-200 Nm)
- 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 is designed for vocational applications including aerial equipment, tow and recovery, tire service trucks, and dump trucks. The housing profile allows installation through a floor access panel without dropping the exhaust system. Compatible Parker pumps are available with flows from 1.6 gpm to 8.2 gpm at 1000 RPM, and the PTO and pump can be ordered together under a single part number. Contact Pro Gear and Transmission to confirm the correct pump pairing and transmission fitment for your build.
