The Chelsea 880XBAHX-M3SS or 880XBAHXM3SS is an 880 Series Power Take-Off assembly built for heavy-duty, high-torque applications. It mounts via an 8-bolt aperture and uses a lever mechanical shift. The output shaft is a 1-1/2"-10T spline with a 1410 companion flange, and the unit is rated for up to 500 lb-ft intermittent torque (verify actual rating against the Chelsea application pages for your specific transmission). Shaft power output reaches 48 HP at 500 RPM and 95 HP at 1000 RPM. The 880 Series fits a wide range of manual transmissions, including Eaton/Fuller, Volvo/Mack, Allison, and others, making it suited for bulk haulers, fire trucks, oil field equipment, aerial units, and large recovery trucks. Call us to confirm proper fit for your application.

The Chelsea 880 Series is designed for continuous operation with a 30% de-rating applied. The 880XBAHX-M3SS is compatible with manual transmissions using an 8-bolt PTO aperture and is suited for bulk haulers, winch applications, fire trucks, oil field equipment, aerial platforms, and large truck recovery. Tapered cone bearings handle significant radial and thrust loads. The removable shift cover allows backlash adjustment without removing the PTO from the transmission. Parker documents available for this series include the 880 Series Owner's Manual and the 880 Series Parts List (HY25-2880-M1_US). Contact Pro Gear and Transmission if you need help cross-referencing this part to your transmission or application.
Features
8-Bolt mounting for compatibility with most manual transmissions including Eaton/Fuller, Volvo/Mack, and Allison
1-1/2"-10T spline output shaft with 1410 companion flange
Lever mechanical shift; optional air control shift available on the 880 Series
Up to 500 lb-ft intermittent torque rating (check application pages for your specific transmission)
Shaft power: 48 HP at 500 RPM, 95 HP at 1000 RPM
Dual-pump output allows mounting a hydraulic 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; 500 lb-ft / 678 Nm (Check 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 1000 RPM (36 kW at 500 RPM; 71 kW at 1000 RPM)
- TRANSMISSION MANUFACTURER: Eaton/Fuller, Volvo/Mack, Allison, Other
Additional Information

The Chelsea 880 Series is designed for continuous operation with a 30% de-rating applied. The 880XBAHX-M3SS is compatible with manual transmissions using an 8-bolt PTO aperture and is suited for bulk haulers, winch applications, fire trucks, oil field equipment, aerial platforms, and large truck recovery. Tapered cone bearings handle significant radial and thrust loads. The removable shift cover allows backlash adjustment without removing the PTO from the transmission. Parker documents available for this series include the 880 Series Owner's Manual and the 880 Series Parts List (HY25-2880-M1_US). Contact Pro Gear and Transmission if you need help cross-referencing this part to your transmission or application.