The Chelsea 221RCAJP-A5XK or 221RCAJPA5XK is a 6-bolt Power Take-Off assembly from the Chelsea 221 Series, built for low-speed, heavy-duty service on aerial, dump truck, and tow-and-recovery equipment. It uses a wire/cable mechanical shift and mounts to transmissions from Allison, Eaton/Fuller, Volvo/Mack, Hino, and other manufacturers. The 1-1/4" round output shaft with key delivers up to 250 lb-ft intermittent torque (verify against application pages for your specific configuration), with shaft power rated at 24 HP at 500 RPM and 48 HP at 1,000 RPM. A cast iron housing with tapered cone output bearings provides strong load-bearing capability, and greaseable pump shafts reduce spline fretting and corrosion over time. Available in standard or low-profile housing configurations. Call us to confirm proper fit for your application.

The Chelsea 221 Series PTO is suited to aerial, vocational, municipal, dump truck, and tow-and-recovery applications. The cast iron housing and tapered cone output bearings provide strong load-bearing capability compared to needle-bearing designs. The 221 Series offers twenty-six output options including Chelsea's 360-degree rotatable flange, three internal speed ratios, and eleven shift options. A self-lube option is available for transmissions that have difficulty supplying lubrication to the PTO. The space-saving air shift cover maximizes underhood clearance. Note: Parker Chelsea lists the 221 Series as no longer available as a current production line - Pro Gear and Transmission can help you source the part or identify a suitable alternative. Call us to discuss your application.
Features
6-bolt mounting compatible with Allison, Eaton/Fuller, Volvo/Mack, Hino, and other transmission manufacturers
Wire/cable mechanical shift actuation
1-1/4" round output shaft with key
Intermittent torque rating up to 250 lb-ft (339 Nm) - confirm against application pages for your configuration
Shaft power: 24 HP at 500 RPM, 48 HP at 1,000 RPM
Greaseable pump shafts to limit spline fretting and corrosion
Available in standard or low-profile housing
Tech Specs
- Intermittent Torque: 250 lb-ft / 339 Nm (check application pages for actual torque ratings for your configuration)
- Shift Type: Wire/Cable, Mechanical
- Output Power: 46-55 HP / 31-40 kW
- Output Shaft Type: 1-1/4" Round with key
- Transmission Manufacturer Compatibility: Allison, Eaton/Fuller, Volvo/Mack, Hino, Other
- Mounting Type: 6-Bolt
- Shaft Power: 24 HP at 500 RPM; 48 HP at 1,000 RPM / 18 kW at 500 RPM; 36 kW at 1,000 RPM
Additional Information

The Chelsea 221 Series PTO is suited to aerial, vocational, municipal, dump truck, and tow-and-recovery applications. The cast iron housing and tapered cone output bearings provide strong load-bearing capability compared to needle-bearing designs. The 221 Series offers twenty-six output options including Chelsea's 360-degree rotatable flange, three internal speed ratios, and eleven shift options. A self-lube option is available for transmissions that have difficulty supplying lubrication to the PTO. The space-saving air shift cover maximizes underhood clearance. Note: Parker Chelsea lists the 221 Series as no longer available as a current production line - Pro Gear and Transmission can help you source the part or identify a suitable alternative. Call us to discuss your application.
