The Chelsea 880 Series Power Take-Off Assembly, part number 880XDAKX-Y4XV or 880XDAKXY4XV, is an 8-bolt, lever mechanical shift PTO built for heavy-duty applications including bulk haulers, fire trucks, oil field equipment, aerial units, and large recovery trucks. This unit features a 1-1/2"-10 spline output shaft paired with a 1410 companion flange, and is rated for up to 500 lb-ft of intermittent torque. Shaft power delivery is 48 HP at 500 RPM and 95 HP at 1000 RPM. The cast iron housing uses constant mesh input gears, tapered cone bearings, and a removable shift cover for accurate backlash adjustment. Compatible with Volvo/Mack, Allison, and Eaton/Fuller transmissions. A genuine Chelsea part available from Pro Gear and Transmission. Call us to confirm proper fit for your application.

The Chelsea 880 Series is suited for demanding on-highway and off-highway applications including bulk haulers, winch systems, fire apparatus, oil field equipment, aerial platforms, and large truck recovery. Constant mesh input gears support both high-speed and high-torque operation. The cast iron housing and tapered cone bearings provide long service life in continuous or intermittent duty cycles. Continuous operation is supported with a 30% torque de-rating applied.
Features
8-bolt mounting for compatibility with most manual transmissions including Volvo/Mack, Allison, and Eaton/Fuller
Lever mechanical shift with optional air control shift available
1-1/2" 10-spline output shaft with 1410 companion flange for driveline connection
Intermittent torque rating up to 500 lb-ft (678 Nm); check application pages for actual torque ratings
Shaft power: 48 HP at 500 RPM, 95 HP at 1000 RPM
Removable shift cover simplifies backlash adjustment; dual-pump output allows mounting a pump on each end
Tech Specs
- Mounting Type: 8-Bolt
- Shift Type: Lever Mechanical
- Transmission Compatibility: Volvo/Mack, Allison, Eaton/Fuller, Other
- Output Shaft Type: 1-1/2" - 10T Spline with 1410 Companion Flange
- Intermittent Torque: 500 lb-ft / 678 Nm (check application pages for actual torque ratings)
- Output Power: 56+ HP / 51+ kW
- Shaft Power: 48 HP (500 RPM), 95 HP (1000 RPM) / 36 kW (500 RPM), 71 kW (1000 RPM)
- Continuous Operation: Yes, with 30% de-rating
Additional Information

The Chelsea 880 Series is suited for demanding on-highway and off-highway applications including bulk haulers, winch systems, fire apparatus, oil field equipment, aerial platforms, and large truck recovery. Constant mesh input gears support both high-speed and high-torque operation. The cast iron housing and tapered cone bearings provide long service life in continuous or intermittent duty cycles. Continuous operation is supported with a 30% torque de-rating applied.
Parts Manual: Chelsea 880 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.