The Chelsea 871 Series Power Take-Off, part number 871XEFJP-D3XV or 871XEFJPD3XV, is a 10-bolt hydraulic PowerShift PTO designed for Allison transmissions. The 871 Series delivers continuous torque capacity up to 670 lb-ft (908 N-m) with no derating required for continuous duty. Nine speed ratios and thirteen output options cover a wide range of driven-equipment demands, from refuse trucks to fire and rescue pumpers and truck cranes. The ductile iron bearing cap is 117% stronger than gray iron, and an o-ring sealing configuration between the housing and bearing cap improves clamp load while reducing vibrational effects. Optional features include Wet Spline pump flange, SmartStart for reduced shock load at start-up, Quiet Gear input, and Electronic Overspeed Control (EOC). Call us to confirm proper fit for your application.

The 871 Series supersedes the Chelsea 870 Series PTO. Compatible Parker documentation includes the 267/281/288/871/878 Series Owner's Manual and the 871 Series Parts List (HY25-2871-M1/US). Markets served include fire and rescue, truck cranes, pumper-cleaner trucks, and refuse vehicles.
Features
10-bolt hydraulic PowerShift mounting designed for Allison transmissions
Ductile iron bearing cap rated 117% stronger than gray iron
Continuous torque capacity up to 670 lb-ft (908 N-m) - no continuous-duty derating required
Nine speed ratios and thirteen output configurations
O-ring sealing between housing and bearing cap reduces vibrational effects and improves clamp load
Wet Spline pump flange, SmartStart, Quiet Gear, and Electronic Overspeed Control (EOC) options available
Tech Specs
- Mounting: 10-Bolt
- Shift Type: PowerShift (Hydraulic)
- Transmission Manufacturer: Allison
- Continuous Torque: 670 lb-ft (908 N-m)
- Speed Ratios: Nine
- Output Options: Thirteen
- Output Shaft Types: SAE B (7/8 in. - 13T) Pump Spline, SAE BB (1 in. - 15T) Pump Spline, SAE C (1-1/4 in. - 14T) Pump Spline, DIN 5462 Pump Spline, 1410 Series Companion Flange, DIN 120 Flange, DIN 100 Flange
- Output Flange Types: SAE B Pump Flange, SAE C Pump Flange
- Shaft Power: 64 HP at 500 RPM, 128 HP at 1000 RPM
- Lubricant: Pressure Lube (P) with Wet Spline (W) option
- Continuous Operation: Yes
Additional Information

The 871 Series supersedes the Chelsea 870 Series PTO. Compatible Parker documentation includes the 267/281/288/871/878 Series Owner's Manual and the 871 Series Parts List (HY25-2871-M1/US). Markets served include fire and rescue, truck cranes, pumper-cleaner trucks, and refuse vehicles.
Parts Manual: Chelsea 871 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.