The Chelsea 871 Series Power Take-Off, part number 871LGFJW-B5TY or 871LGFJWB5TY, is a 10-bolt PowerShift (hydraulic) PTO designed for Allison transmission applications. The 871 Series carries a continuous torque rating up to 670 lb-ft (908 N-m) with no derating required for continuous-duty use. Nine speed ratios and thirteen output options cover a wide range of driven equipment requirements. A ductile iron bearing cap, rated 117% stronger than gray iron, and an O-ring sealing configuration between the housing and bearing cap improve clamp load and resist vibration from modern engine designs. Optional Wet Spline pump flange, Quiet Gear input, SmartStart, and Electronic Overspeed Control (EOC) round out the platform. Call us to confirm proper fit for your application.

The 871 Series replaces the Chelsea 870 Series PTO. It is the only Chelsea PTO to offer all three of Chelsea's high-demand solutions in a single platform: Wet Spline, SmartStart, and Quiet Gear. Common markets include fire and rescue, truck cranes, pumper/cleaner trucks, and refuse vehicles. Parker Chelsea documents applicable to this series include the 267/281/288/871/878 Series Owner's Manual and the 871 Series Parts List (HY25-2871-M1/US).
Features
10-bolt PowerShift (hydraulic) mounting for Allison transmissions
Continuous torque rating up to 670 lb-ft (908 N-m), no continuous-duty derating required
Ductile iron bearing cap, 117% stronger than gray iron predecessor
O-ring seal between housing and bearing cap reduces vibration effects and improves clamp load
Nine speed ratios and thirteen output options
Optional Wet Spline pump flange, Quiet Gear input, SmartStart shock-reduction, and Electronic Overspeed Control (EOC)
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: PowerShift (Hydraulic)
- Transmission Manufacturer: Allison
- Continuous Torque: 670 lb-ft (908 N-m), check application pages for actual torque ratings
- Shaft Power: 64 HP at 500 RPM, 128 HP at 1,000 RPM
- Speed Ratios: Nine
- Output Options: Thirteen
- Lubricant: Pressure Lube and Wet Spline
- Continuous Operation: Yes
Additional Information

The 871 Series replaces the Chelsea 870 Series PTO. It is the only Chelsea PTO to offer all three of Chelsea's high-demand solutions in a single platform: Wet Spline, SmartStart, and Quiet Gear. Common markets include fire and rescue, truck cranes, pumper/cleaner trucks, and refuse vehicles. Parker Chelsea documents applicable to this series include the 267/281/288/871/878 Series Owner's Manual and the 871 Series Parts List (HY25-2871-M1/US).
Parts Manual: Chelsea 871 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.