The Chelsea 880XDAHX-A5GS or 880XDAHXA5GS is an 8-bolt Power Take-Off assembly from the Chelsea 880 Series, designed for heavy-duty applications including bulk haulers, fire trucks, oil field equipment, aerial units, and large truck recovery rigs. It mounts to manual transmissions with an 8-bolt aperture from Volvo/Mack, Allison, Eaton/Fuller, and other compatible manufacturers. The output shaft is a 1-1/2"-10T spline fitted with a 1410 companion flange. Intermittent torque rating for this series reaches 500 lb-ft (678 Nm); check application pages to confirm the actual rating for your installation. Shaft power at 1000 RPM reaches 95 HP (71 kW). The shift is lever-mechanical, and the dual-pump output allows a hydraulic pump to be mounted on each end of the PTO. A genuine Chelsea part from Pro Gear and Transmission. Call us to confirm proper fit for your application.

The Chelsea 880 Series is suited for bulk haulers, winch applications, fire trucks, oil field equipment, aerial platforms, and large truck recovery vehicles. The 880 Series features constant mesh input gears for both high- and low-speed, high-torque demands. Tapered cone bearings provide excellent load-bearing capability. The series is available with SAE B, SAE C, and ISO 7652 pump flange output options in addition to the driveline output on this unit. Applications span Oil and Gas, Aerial, Mining, On-Highway, and other mobile markets.
Features
8-bolt mounting for compatibility with most manual transmissions including Volvo/Mack, Allison, and Eaton/Fuller
1-1/2"-10T spline output shaft with 1410 series companion flange
Intermittent torque rating up to 500 lb-ft (678 Nm) - verify actual rating on application pages
Shaft power: 48 HP (36 kW) at 500 RPM; 95 HP (71 kW) at 1000 RPM
Dual-pump output allows a hydraulic pump to be mounted on each end of the PTO
Lever-mechanical shift with removable shift cover for accurate backlash adjustment
Tech Specs
- Intermittent Torque: 500 lb-ft (678 Nm) - Check Application Pages for Actual Torque Ratings
- Continuous Operation: Yes, with 30% de-rating
- Transmission Compatibility: Volvo/Mack, Allison, Eaton/Fuller, Other
- 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 (36 kW) at 500 RPM; 95 HP (71 kW) at 1000 RPM
Additional Information

The Chelsea 880 Series is suited for bulk haulers, winch applications, fire trucks, oil field equipment, aerial platforms, and large truck recovery vehicles. The 880 Series features constant mesh input gears for both high- and low-speed, high-torque demands. Tapered cone bearings provide excellent load-bearing capability. The series is available with SAE B, SAE C, and ISO 7652 pump flange output options in addition to the driveline output on this unit. Applications span Oil and Gas, Aerial, Mining, On-Highway, and other mobile markets.