The Chelsea 880 Series Power Take-Off Assembly, part number 880XMAHX-A5XV or 880XMAHXA5XV, is an 8-bolt, lever mechanical shift PTO built for heavy-duty, high-torque applications. The output shaft is a 1-1/2"-10T spline paired with a 1410 series companion flange, and the unit delivers 48 HP at 500 RPM and 95 HP at 1,000 RPM. Intermittent torque capacity for the 880 Series reaches 500 lb-ft (678 Nm); check application pages for the rating confirmed for your specific installation. Compatible with Volvo/Mack, Allison, and Eaton/Fuller transmissions, among others. Typical applications include bulk haulers, fire trucks, oil field equipment, winch systems, and large truck recovery rigs. A genuine Chelsea part from Pro Gear and Transmission. Call us to confirm proper fit for your transmission and pump configuration.

The Chelsea 880 Series is designed for high and low speed, high torque service with constant mesh input gears. Tapered cone bearings provide strong load-bearing support. The removable shift cover makes backlash adjustment straightforward and precise. The dual-pump output configuration allows a hydraulic pump to be mounted on each end of the PTO. Typical markets served include on-highway, oil and gas, aerial, and mining applications. Parker documents available for this series include the 880 Series Owner's Manual, 880 Series Parts List (HY25-2880-M1_US), and Chelsea Service Manual (HY25-6880-M1/US).
Features
8-bolt mounting compatible with Volvo/Mack, Allison, and Eaton/Fuller transmissions
Lever mechanical shift; optional air control shift available on the 880 Series
1-1/2"-10T spline output shaft with 1410 series companion flange
Shaft power: 48 HP (500 RPM) and 95 HP (1,000 RPM)
Intermittent torque rating: 500 lb-ft (678 Nm) - verify actual rating on application pages
Rugged cast iron housing; removable shift cover allows straightforward backlash adjustment
Tech Specs
- Mounting Type: 8-Bolt
- Shift Type: Lever Mechanical
- Output Shaft Type: 1-1/2" - 10T Spline with 1410 Series Companion Flange
- Output Power: 56+ HP / 51+ kW
- Shaft Power: 48 HP (500 RPM), 95 HP (1,000 RPM) / 36 kW (500 RPM), 71 kW (1,000 RPM)
- Intermittent Torque: 500 lb-ft / 678 Nm (Check Application Pages for Actual Torque Ratings)
- Compatible Transmissions: Volvo/Mack, Allison, Eaton/Fuller, and others
- Continuous Operation: Yes, with 30% de-rating
Additional Information

The Chelsea 880 Series is designed for high and low speed, high torque service with constant mesh input gears. Tapered cone bearings provide strong load-bearing support. The removable shift cover makes backlash adjustment straightforward and precise. The dual-pump output configuration allows a hydraulic pump to be mounted on each end of the PTO. Typical markets served include on-highway, oil and gas, aerial, and mining applications. Parker documents available for this series include the 880 Series Owner's Manual, 880 Series Parts List (HY25-2880-M1_US), and Chelsea Service Manual (HY25-6880-M1/US).