The Chelsea 252GDHVP-B51121 or 252GDHVPB51121 is a hydraulic-shift power take-off 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 output through a 1-inch round shaft with a 1/4-inch key. Shaft power output is 11 HP at 500 RPM and 23 HP at 1000 RPM, with an intermittent torque rating of 120 lb-ft (163 Nm) - verify actual torque against the application pages for your chassis. The single hose connection and integrated cartridge valve simplify installation, and the weather-tight electrical connectors protect the shift circuit. A Controlled Compression Interface Gasket seals the mounting face. Available from Pro Gear and Transmission - call us to confirm proper fit for your transmission and truck configuration.
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 power: 11 HP at 500 RPM, 23 HP at 1000 RPM
Intermittent torque: 120 lb-ft (163 Nm) - check application pages for your specific rating
Controlled Compression Interface Gasket and weather-tight electrical connectors for reliable sealing and shift circuit protection
Tech Specs
- Shift Type: Hydraulic
- Mounting Type: 6-Bolt
- Output Shaft Type: 1" Round with 1/4" Key
- Transmission Fitment: Allison 1000/2000/2400 Series, 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 (500 RPM), 23 HP (1000 RPM), 9 kW (500 RPM), 17 kW (1000 RPM)
Additional Information
Parts Manual: Chelsea 252 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
