The Chelsea 252RDKUX-B51121 or 252RDKUXB51121 is a 252 Series Power Take-Off designed for Allison 1000/2000/2400 series and Aisin automatic transmissions used in various truck chassis, including Dodge/RAM applications. This PTO mounts via a 6-bolt pattern and uses hydraulic shift actuation. The 252 Series features an integrated cartridge valve with a single hose connection, eliminating remote solenoid routing. The housing is designed to pass through a floor access panel without dropping the exhaust, simplifying installation. Output options for this series include SAE A pump flange and driveline configurations. Call us to confirm the specific output and application fit for your truck.
Features
Chelsea 252 Series Power Take-Off, part number 252RDKUX-B51121 or 252RDKUXB51121
6-bolt mounting pattern
Hydraulic shift actuation with integrated cartridge valve
Single hose connection design, no remote solenoid required
Compatible with Allison 1000/2000/2400 series and Aisin automatic transmissions
SAE A pump flange and driveline output options available in the 252 Series
Tech Specs
- Mounting Type: 6-Bolt
- Shift Type: Hydraulic
- Transmission Compatibility (Series): Allison 1000, 2000, 2400 series; Aisin automatic; Dodge/RAM applications
- Output Type: SAE A Pump Flange, Driveline
- Output Shaft Options (Series): Round Shaft 1-1/4" with Key, SAE A 5/8"-9T Pump Spline, 3/4"-11T Pump Spline
- Series Intermittent Torque Rating: 101-200 lb-ft (see application pages for actual rating)
- Series Shaft Power: 11 HP at 500 RPM, 23 HP at 1000 RPM
- Continuous Operation: Yes, with 30% de-rating
- Lubrication: No Pressure Lube (X designation)
- Dimensions (H x W x L): 15.75 in. x 12.5 in. x 14 in.
Additional Information
The Chelsea 252 Series is built for vocational and municipal equipment markets, including aerial, tow and recovery, tire service, and dump truck applications. The 252 Series housing design allows installation through the floor access panel without removing the exhaust system. Parker offers a large selection of pumps for use with the 252 Series, with flows ranging from 1.6 gpm to 8.2 gpm at 1000 RPM. The PTO and pump can be ordered together under one part number. Reference documents for the 252 Series include the 252 Series Owner's Manual and Parts List (HY25-2252-M1_US).Parts Manual: Chelsea 252 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
