The Chelsea 880DGMCX-A6XS or 880DGMCXA6XS is an 880 Series Power Take-Off Assembly built for heavy-duty 8-bolt manual transmission apertures. It uses a lever mechanical shift and delivers up to 500 lb-ft intermittent torque, with shaft power rated at 48 HP at 500 RPM and 95 HP at 1,000 RPM. The output shaft is a 1-1/2"-10T spline paired with a 1410 companion flange, making it a direct driveline-output configuration suited for bulk haulers, fire trucks, large tow and recovery trucks, oil field equipment, and aerial applications. A removable shift cover simplifies backlash adjustment at installation. The dual-pump output design allows mounting a pump on each end of the PTO simultaneously. Compatible with Volvo/Mack, Allison, Eaton/Fuller, and other transmission families. Call us to confirm proper fit for your transmission and application.

The Chelsea 880 Series is designed for high and low speed, high-torque applications using constant mesh input gears. Tapered cone bearings provide strong load-bearing performance. The 880 Series serves markets including oil and gas, aerial, mining, on-highway, and other mobile applications. Common applications include bulk haulers, winch systems, fire trucks, oil field equipment, aerial units, and large truck recovery vehicles.
Features
8-bolt mounting fits most manual transmissions with an 8-bolt aperture
Lever mechanical shift with removable shift cover for simplified, accurate backlash adjustment
1-1/2"-10T spline output shaft with 1410 companion flange for driveline-direct connection
Dual-pump output design allows simultaneous pump mounting on both ends of the PTO
Shaft power: 48 HP at 500 RPM and 95 HP at 1,000 RPM
Cast iron housing designed for high-torque, continuous-duty applications including fire trucks, oil field, and large truck recovery
Tech Specs
- Intermittent Torque: 401-500 lb-ft (501+ Nm); 500 lb-ft / 678 Nm (see application pages for actual torque ratings)
- Shift Type: Lever Mechanical
- Mounting Type: 8-Bolt
- Output Shaft Type: 1-1/2" - 10T Spline with 1410 Companion Flange
- Output Power: 56+ HP (51+ kW)
- Shaft Power: 48 HP at 500 RPM; 95 HP at 1,000 RPM (36 kW at 500 RPM; 71 kW at 1,000 RPM)
- Compatible Transmissions: Volvo/Mack, Allison, Eaton/Fuller, Other
- Continuous Operation: Yes, with 30% de-rating
Additional Information

The Chelsea 880 Series is designed for high and low speed, high-torque applications using constant mesh input gears. Tapered cone bearings provide strong load-bearing performance. The 880 Series serves markets including oil and gas, aerial, mining, on-highway, and other mobile applications. Common applications include bulk haulers, winch systems, fire trucks, oil field equipment, aerial units, and large truck recovery vehicles.
Parts Manual: Chelsea 880 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.