The Chelsea 252GMHVP-B5AD or 252GMHVPB5AD is a 252 Series Power Take-Off assembly built for Allison 1000/2000/2400 series automatic transmissions and RAM truck applications. It mounts via a 6-bolt pattern, shifts hydraulically, and drives through a 1-inch round output shaft with keyway. Shaft power output reaches 11 HP at 500 RPM and 23 HP at 1000 RPM, with intermittent torque rated at 120 lb-ft (163 Nm) - check application pages for actual torque ratings specific to your installation. The integrated cartridge valve consolidates to a single hose connection, cutting installation time compared to remote solenoid setups. Weather-tight electrical connectors and a Controlled Compression Interface Gasket are included as standard. Sold by Pro Gear and Transmission - call us to confirm proper fit for your application.

• 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)

The Chelsea 252 Series housing is sized to pass through a standard floor access panel without requiring exhaust system removal - a practical advantage on RAM and Allison-equipped vocational trucks. Typical applications for this series include tow and recovery, tire service trucks, dump trucks, and aerial equipment. Parker also offers a range of matching pumps (flows from 1.6 gpm to 8.2 gpm at 1000 RPM) that can be ordered alongside this PTO under a single part number.