The Chelsea 880 Series Power Take-Off, part number 880XMDAX-A3XV or 880XMDAXA3XV, is an 8-bolt, lever mechanical shift PTO built for heavy-duty applications including fire trucks, bulk haulers, oil field equipment, aerial units, and large recovery trucks. The output shaft is a 1-1/2"-10T spline with a 1410 Series companion flange, rated for up to 500 lb-ft intermittent torque. Shaft power delivery reaches 48 HP at 500 RPM and 95 HP at 1000 RPM. Compatible with Allison, Eaton/Fuller, and Volvo/Mack transmissions among others. The removable shift cover makes backlash adjustment faster and more accurate. Call us to confirm proper fit for your transmission.

The Chelsea 880 Series is designed for constant mesh input gears, supporting both high-speed and high-torque applications. The cast iron housing is built to handle demanding environments across oil and gas, mining, aerial, and on-highway vehicle markets. The removable shift cover allows for accurate backlash adjustment without removing the entire unit from the transmission. Dual-pump output configuration is supported, enabling a hydraulic pump to be mounted on each end of the PTO simultaneously. Compatible with Parker Chelsea series documentation including the 880 Series Owner's Manual (HY25-6880-M1/US) and 880 Series Parts List (HY25-2880-M1_US).
Features
8-bolt mounting for compatibility with a wide range of manual transmissions including Allison, Eaton/Fuller, and Volvo/Mack
Lever mechanical shift with optional air control shift available
1-1/2"-10T spline output shaft with 1410 Series companion flange
Intermittent torque rating: up to 500 lb-ft (678 Nm) - check application pages for actual torque ratings
Shaft power output: 48 HP at 500 RPM, 95 HP at 1000 RPM
Dual-pump output allows mounting a pump on each end of the PTO
Cast iron housing with removable shift cover for simplified backlash adjustment
Tech Specs
- Intermittent Torque: 401-500 lb-ft / 501+ Nm; up to 500 lb-ft (678 Nm) - check application pages for actual torque ratings
- Shift Type: Lever Mechanical
- Output Shaft Type: 1-1/2"-10T Spline with 1410 Series Companion Flange
- Mounting Type: 8-Bolt
- Output Power: 56+ HP (51+ kW)
- Shaft Power: 48 HP at 500 RPM / 95 HP at 1000 RPM (36 kW at 500 RPM / 71 kW at 1000 RPM)
- Compatible Transmissions: Allison, Eaton/Fuller, Volvo/Mack, Other
- Continuous Operation: Yes, with 30% de-rating
Additional Information

The Chelsea 880 Series is designed for constant mesh input gears, supporting both high-speed and high-torque applications. The cast iron housing is built to handle demanding environments across oil and gas, mining, aerial, and on-highway vehicle markets. The removable shift cover allows for accurate backlash adjustment without removing the entire unit from the transmission. Dual-pump output configuration is supported, enabling a hydraulic pump to be mounted on each end of the PTO simultaneously. Compatible with Parker Chelsea series documentation including the 880 Series Owner's Manual (HY25-6880-M1/US) and 880 Series Parts List (HY25-2880-M1_US).