The Chelsea 871XCFJP-K3RS or 871XCFJPK3RS is a 10-bolt PowerShift (hydraulic) Power Take-Off from the Chelsea 871 Series, designed for Allison transmission applications. The 871 Series delivers continuous-duty torque capacity up to 670 lb-ft (908 N-m) with no derating required for continuous operation. Nine speed ratios and thirteen output options give this unit exceptional application flexibility across fire and rescue, refuse, truck crane, and pumper-cleaner vocations. 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 and reduces vibration damage. The 871 Series is the only Chelsea PTO to offer all three premium options: Wet Spline, SmartStart, and Quiet Gear. Call us to confirm the right fit for your application.

The Chelsea 871 Series replaces the earlier 870 Series PTO with a package of targeted durability upgrades. The ductile iron bearing cap and improved O-ring sealing address vibration-induced wear associated with modern engine designs. Electronic Overspeed Control (EOC) is available to protect driven equipment from overspeed damage. SmartStart reduces shock loads at start-up in demanding vocation cycles. The compact housing profile is engineered to reduce clearance conflicts in tight mounting environments. Applicable markets include fire and rescue, truck cranes, refuse, and pumper-cleaner equipment. Parker reference documents include the 871 Series Parts List (HY25-2871-M1/US) and the 267/281/288/871/878 Series Owner's Manual.
Features
10-bolt PowerShift (hydraulic) mounting for Allison transmissions
Ductile iron bearing cap rated 117% stronger than gray iron
Continuous-duty torque capacity up to 670 lb-ft (908 N-m) with no derating required
Nine speed ratios and thirteen output options for broad application coverage
O-ring sealing configuration between housing and bearing cap to reduce vibrational effects and improve clamp load
Wet Spline pump flange, SmartStart shock-load reduction, and Quiet Gear input all available on this series
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 (P) / Wet Spline (W)
- Output Shaft Types Available: 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 Available: SAE B Pump Flange, SAE C Pump Flange
- Continuous Operation: Yes
Additional Information

The Chelsea 871 Series replaces the earlier 870 Series PTO with a package of targeted durability upgrades. The ductile iron bearing cap and improved O-ring sealing address vibration-induced wear associated with modern engine designs. Electronic Overspeed Control (EOC) is available to protect driven equipment from overspeed damage. SmartStart reduces shock loads at start-up in demanding vocation cycles. The compact housing profile is engineered to reduce clearance conflicts in tight mounting environments. Applicable markets include fire and rescue, truck cranes, refuse, and pumper-cleaner equipment. Parker reference documents include the 871 Series Parts List (HY25-2871-M1/US) and the 267/281/288/871/878 Series Owner's Manual.
Parts Manual: Chelsea 871 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.