The Chelsea 880 Series Power Take-Off Assembly, part number 880XDAHX-Y3XK or 880XDAHXY3XK, is a heavy-duty 8-bolt PTO built for high-torque, high-demand service. It uses a lever mechanical shift and delivers an intermittent torque rating of 401-500 lb-ft (check application pages for actual torque ratings). The output shaft is a 1-1/2"-10T spline paired with a 1410 companion flange. Shaft power is rated at 48 HP at 500 RPM and 95 HP at 1,000 RPM, with output exceeding 56 HP overall. The 880 Series is compatible with Allison, Eaton/Fuller, Volvo/Mack, and other transmissions and fits typical applications including fire trucks, bulk haulers, oil field equipment, and large recovery vehicles. The removable shift cover allows straightforward backlash adjustment. Call us to confirm proper fit for your specific transmission and application.

The Chelsea 880 Series is suited for oil and gas, aerial, mining, on-highway, and other mobile applications. Typical vehicle fitments include bulk haulers, fire trucks, winch-equipped trucks, oil field units, aerial equipment, and large recovery vehicles. The 880 Series supports continuous operation with a 30% de-rating. Compatible output flange and spline configurations vary by model; confirm your specific transmission aperture and pump drive requirements before ordering. Call Pro Gear and Transmission if you need help identifying the correct 880 Series configuration for your truck.
Features
8-bolt mounting pattern fits most manual transmissions including Allison, Eaton/Fuller, and Volvo/Mack
Lever mechanical shift with optional air control shift configuration
1-1/2"-10T spline output with 1410 series companion flange
Shaft power: 48 HP at 500 RPM, 95 HP at 1,000 RPM
Removable shift cover for simplified, accurate backlash adjustment
Dual-pump output supports mounting a hydraulic pump on each end of the PTO
Tech Specs
- Intermittent Torque: 401-500 lb-ft / 501+ Nm (500 lb-ft / 678 Nm - check application pages for actual torque ratings)
- Transmission Compatibility: Allison, Eaton/Fuller, Volvo/Mack, Other
- Shift Type: Lever Mechanical
- Output Power: 56+ HP / 51+ kW
- Output Shaft Type: 1-1/2" - 10T Spline with 1410 Series Companion Flange
- Mounting Type: 8-Bolt
- Shaft Power: 48 HP (500 RPM), 95 HP (1,000 RPM) / 36 kW (500 RPM), 71 kW (1,000 RPM)
Additional Information

The Chelsea 880 Series is suited for oil and gas, aerial, mining, on-highway, and other mobile applications. Typical vehicle fitments include bulk haulers, fire trucks, winch-equipped trucks, oil field units, aerial equipment, and large recovery vehicles. The 880 Series supports continuous operation with a 30% de-rating. Compatible output flange and spline configurations vary by model; confirm your specific transmission aperture and pump drive requirements before ordering. Call Pro Gear and Transmission if you need help identifying the correct 880 Series configuration for your truck.
Parts Manual: Chelsea 880 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
