The Chelsea 252RMKUX-B51126 or 252RMKUXB51126 is a Power Take-Off (PTO) assembly from the Chelsea 252 Series, designed for Allison 1000, 2000, and 2400 series automatic transmissions as well as Aisin automatic transmissions used in Dodge/RAM trucks. The 252 Series uses a 6-bolt mounting configuration and hydraulic shift operation. Output options within the series include an SAE A pump flange and driveline configurations, with shaft power rated at 11 HP at 500 RPM and 23 HP at 1000 RPM. The integrated cartridge valve and single-hose connection simplify installation, and the housing is designed to pass through a floor access panel without requiring exhaust system removal. Call us to confirm proper fitment for your specific transmission and chassis.
Features
Chelsea 252 Series PTO for Allison 1000, 2000, 2400 and Aisin automatic transmissions
6-bolt mounting configuration
Hydraulic shift operation
Integrated cartridge valve with single-hose connection simplifies installation
Shaft power: 11 HP at 500 RPM, 23 HP at 1000 RPM
Housing designed to pass through floor access panel without dropping the exhaust system
Tech Specs
- Mounting Type: 6-Bolt
- Shift Type: Hydraulic
- Output Type: SAE A Pump Flange, Driveline
- Shaft Power: 11 HP (500 RPM), 23 HP (1000 RPM)
- Intermittent Torque: 101 to 200 lb-ft (see application pages for actual torque ratings)
- Continuous Operation: Yes, with 30% de-rating
- Transmission Compatibility: Allison 1000/2000/2400 Series, Aisin Automatic (Dodge/RAM)
- Output Shaft Options: Round shaft (1-1/4" key), SAE A (5/8" - 9T) pump spline, 3/4" - 11T pump spline
- Dimensions (H x W x L): 15.75 in. x 12.5 in. x 14 in.
Additional Information
Parts Manual: Chelsea 252 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
