The Chelsea 880 Series Power Take-Off Assembly, part number 880XRAHX-A5XS or 880XRAHXA5XS, is an 8-bolt, lever mechanical shift PTO rated for up to 500 lb-ft (678 Nm) intermittent torque. The output shaft is a 1-1/2"-10T spline fitted with a 1410 companion flange, delivering 48 HP at 500 RPM and 95 HP at 1000 RPM. The dual-pump output design allows mounting a hydraulic pump on each end of the unit. Compatible with Volvo/Mack, Allison, Eaton/Fuller, and other 8-bolt aperture manual transmissions. Applications include bulk haulers, fire trucks, oil field equipment, winch systems, and large truck recovery rigs. A genuine Chelsea part available from Pro Gear and Transmission. Call us to confirm proper fit for your transmission.

The Chelsea 880 Series is suited for bulk haulers, fire trucks, oil field equipment, winch applications, aerial units, and large truck recovery vehicles. The 880 Series features constant mesh input gears and tapered cone bearings for load bearing in high-torque, variable-speed applications. The removable shift cover allows backlash adjustment without full disassembly. Output options across the 880 Series include SAE B, SAE BB, SAE C, and ISO pump flanges in addition to the 1410 driveline companion flange configuration on this unit.
Features
8-bolt mounting fits most manual transmissions with 8-bolt aperture, including Volvo/Mack, Allison, and Eaton/Fuller
1-1/2"-10T spline output shaft with 1410 companion flange
Intermittent torque rating up to 500 lb-ft (678 Nm); check application pages for actual torque ratings
Shaft power: 48 HP (500 RPM) / 95 HP (1000 RPM)
Lever mechanical shift standard; optional air control shift available
Dual-pump output allows mounting a hydraulic pump on each end of the PTO
Removable shift cover simplifies backlash adjustment
Cast iron housing construction
Tech Specs
- Intermittent Torque: 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 Compatibility: Volvo/Mack, Allison, Eaton/Fuller, Other 8-Bolt Aperture Transmissions
- Continuous Operation: Yes, with 30% de-rating
Additional Information

The Chelsea 880 Series is suited for bulk haulers, fire trucks, oil field equipment, winch applications, aerial units, and large truck recovery vehicles. The 880 Series features constant mesh input gears and tapered cone bearings for load bearing in high-torque, variable-speed applications. The removable shift cover allows backlash adjustment without full disassembly. Output options across the 880 Series include SAE B, SAE BB, SAE C, and ISO pump flanges in addition to the 1410 driveline companion flange configuration on this unit.