The Chelsea 880XQAHX-M3XS or 880XQAHXM3XS is an 880 Series 8-bolt Power Take-Off assembly designed for heavy-duty applications including bulk haulers, fire trucks, oil field equipment, winch systems, and large truck recovery. It uses a lever mechanical shift and delivers output power exceeding 56 HP, 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 inch, 10-tooth spline fitted with a 1410 companion flange. Intermittent torque capacity reaches 500 lb-ft, confirm actual ratings on Chelsea application pages for your specific transmission. The cast iron housing accepts an 8-bolt mounting pattern and is compatible with Volvo/Mack, Allison, and Eaton/Fuller transmissions, among others. Call us to confirm proper fit for your application.

The Chelsea 880 Series is built for high-torque, continuous-duty environments including oil field, aerial, mining, and on-highway applications. The series supports continuous operation with a 30% de-rating and features constant mesh input gears for high- and low-speed use. Tapered cone bearings provide load-bearing durability. The removable shift cover allows accurate backlash adjustment without removing the unit from the transmission.
Features
8-bolt mounting pattern fits most manual transmissions including Volvo/Mack, Allison, and Eaton/Fuller
Lever mechanical shift; optional air control shift available on the 880 Series
1-1/2 inch 10-tooth spline output shaft with 1410 companion flange
Intermittent torque rating up to 500 lb-ft (678 Nm), verify on Chelsea application pages
Shaft power: 48 HP at 500 RPM, 95 HP at 1,000 RPM
Cast iron housing with removable shift cover for simplified backlash adjustment
Tech Specs
- Intermittent Torque: Up to 500 lb-ft (678 Nm), check Chelsea application pages for actual rating
- Shift Type: Lever Mechanical
- Mounting Type: 8-Bolt
- Output Shaft Type: 1-1/2 inch 10-tooth spline with 1410 companion flange
- Output Power: 56+ HP (51+ kW)
- Shaft Power: 48 HP (36 kW) at 500 RPM; 95 HP (71 kW) at 1,000 RPM
- Compatible Transmissions: Volvo/Mack, Allison, Eaton/Fuller, Other
Additional Information

The Chelsea 880 Series is built for high-torque, continuous-duty environments including oil field, aerial, mining, and on-highway applications. The series supports continuous operation with a 30% de-rating and features constant mesh input gears for high- and low-speed use. Tapered cone bearings provide load-bearing durability. The removable shift cover allows accurate backlash adjustment without removing the unit from the transmission.
Parts Manual: Chelsea 880 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.