The Chelsea 880 Series Power Take-Off Assembly, part number 880XGAHX-V3XY or 880XGAHXV3XY, is an 8-bolt, lever mechanical shift PTO built for heavy-duty, high-torque service. The output shaft is a 1-1/2"-10 spline configuration paired with a 1410 companion flange, rated for up to 500 lb-ft intermittent torque. Shaft power reaches 48 HP at 500 RPM and 95 HP at 1,000 RPM. The cast iron housing carries constant mesh input gears, and the removable shift cover simplifies backlash adjustment during installation. This unit fits transmissions with an 8-bolt aperture including Volvo/Mack, Allison, and Eaton/Fuller applications. A genuine Chelsea part sold by Pro Gear and Transmission. Call us to confirm proper fit for your transmission and application.

The Chelsea 880 Series is suited for bulk haulers, fire trucks, oil field equipment, aerial units, winch applications, and large truck recovery vehicles. The 880 Series supports continuous operation with a 30% de-rating. Tapered cone bearings provide load-bearing capability for high and low speed, high torque service. An optional air control shift is available as an alternative to the standard lever control. The series accommodates multiple output flange standards including SAE B, SAE C, and ISO 7652 pump flanges, as well as driveline output configurations.
Features
8-Bolt mounting, compatible with Volvo/Mack, Allison, and Eaton/Fuller transmissions
Lever mechanical shift with removable shift cover for accurate backlash adjustment
1-1/2"-10 spline output shaft with 1410 series companion flange
Intermittent torque rating up to 500 lb-ft (678 Nm) - verify against application pages for your specific configuration
Shaft power output: 48 HP at 500 RPM, 95 HP at 1,000 RPM
Cast iron housing with dual-pump output capability for mounting a pump on each end
Tech Specs
- Intermittent Torque: 500 lb-ft (678 Nm) - Check Application Pages for Actual Torque Ratings
- Transmission Manufacturer 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 1,000 RPM
Additional Information

The Chelsea 880 Series is suited for bulk haulers, fire trucks, oil field equipment, aerial units, winch applications, and large truck recovery vehicles. The 880 Series supports continuous operation with a 30% de-rating. Tapered cone bearings provide load-bearing capability for high and low speed, high torque service. An optional air control shift is available as an alternative to the standard lever control. The series accommodates multiple output flange standards including SAE B, SAE C, and ISO 7652 pump flanges, as well as driveline output configurations.
Parts Manual: Chelsea 880 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
