The Chelsea 871XAFJP-K5XV is a 10-bolt PowerShift (hydraulic shift) Power Take-Off from Chelsea's 871 Series, designed for Allison transmission applications. The compact housing keeps clearance issues to a minimum, while a ductile iron bearing cap rated 117% stronger than gray iron and an O-ring sealing configuration between the housing and bearing cap resist the vibrational stresses of modern engine designs. The 871 Series supports continuous-duty operation with torque capacity up to 670 lb-ft (908 N-m) across nine available speed ratios. Thirteen output configurations and a Wet Spline pump flange option extend PTO and pump shaft life. SmartStart and Quiet Gear options are also available for compatible assemblies. Call us to confirm proper fit for your application.

The Chelsea 871 Series replaces the earlier 870 Series PTO. Applicable Parker documentation includes the 267/281/288/871/878 Series Owner's Manual, the 871 Series Parts List (HY25-2871-M1/US), and 871 Series Sales Literature. The 871 Series is the only Chelsea PTO to offer all three premium options together: Wet Spline, SmartStart, and Quiet Gear. Typical market applications include fire and rescue, truck cranes, pumper cleaners, and refuse vehicles.
Features
10-bolt PowerShift (hydraulic) mounting designed for Allison transmissions
Ductile iron bearing cap, 117% stronger than gray iron for increased durability
O-ring sealing between housing and bearing cap reduces vibrational effects and improves clamp load
Torque capacity up to 670 lb-ft (908 N-m) rated for continuous-duty operation
Nine speed ratios and thirteen output options for wide application flexibility
Wet Spline pump flange, SmartStart, Quiet Gear, and Electronic Overspeed Control (EOC) options available
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: PowerShift (Hydraulic)
- Transmission Manufacturer: Allison
- Continuous Torque: 670 lb-ft / 908 N-m
- Speed Ratios: Nine
- Output Options: Thirteen
- Continuous Operation: Yes
- Bearing Cap Material: Ductile Iron
- Available Options: Wet Spline, SmartStart, Quiet Gear, Electronic Overspeed Control (EOC)
Additional Information

The Chelsea 871 Series replaces the earlier 870 Series PTO. Applicable Parker documentation includes the 267/281/288/871/878 Series Owner's Manual, the 871 Series Parts List (HY25-2871-M1/US), and 871 Series Sales Literature. The 871 Series is the only Chelsea PTO to offer all three premium options together: Wet Spline, SmartStart, and Quiet Gear. Typical market applications include fire and rescue, truck cranes, pumper cleaners, and refuse vehicles.
Parts Manual: Chelsea 871 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
