The Chelsea 880XBAHP-M4XS or 880XBAHPM4XS is an 8-bolt, lever mechanical shift power take-off from the Chelsea 880 Series, designed for heavy-duty applications including bulk haulers, fire trucks, large tow and recovery trucks, oil field equipment, and aerial units. The output shaft is a 1-1/2"-10T spline paired with a 1410 series companion flange. Intermittent torque capacity for this series is rated up to 500 lb-ft (678 Nm) -- verify actual rating on the Chelsea application pages for your specific installation. Shaft power output reaches 95 HP at 1,000 RPM. The cast iron housing uses tapered cone bearings, and the removable shift cover allows backlash adjustment without removing the unit. Fits most manual transmissions with an 8-bolt aperture, including Eaton/Fuller, Volvo/Mack, and Allison. Available from Pro Gear and Transmission -- call us to confirm proper fitment for your transmission.

The Chelsea 880 Series is suited for high-torque, variable-speed applications across oil and gas, aerial, mining, and on-highway markets. The 880 Series supports continuous operation with a 30% de-rating applied. Multiple output flange options are available within the 880 Series, including SAE B, SAE C, and ISO 7652 pump flanges in addition to the 1410 driveline companion flange on this unit. Refer to the Chelsea 880 Series Parts List (HY25-2880-M1_US) and the Chelsea Service Manual (HY25-6880-M1/US) for full assembly and service information.
Features
8-bolt mounting for compatibility with most manual transmissions including Eaton/Fuller, Volvo/Mack, and Allison
Lever mechanical shift with optional air control shift available
1-1/2" - 10T spline output shaft with 1410 series companion flange
Intermittent torque rating up to 500 lb-ft (678 Nm) -- confirm actual rating via Chelsea application pages
Shaft power output: 48 HP at 500 RPM, 95 HP at 1,000 RPM
Removable shift cover simplifies backlash adjustment; rugged cast iron housing with tapered cone bearings
Tech Specs
- Intermittent Torque: 401-500 lb-ft (501+ Nm); series rating up to 500 lb-ft (678 Nm) -- check Chelsea application pages for actual torque rating
- Transmission Compatibility: Eaton/Fuller, Volvo/Mack, Allison, 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 (36 kW) at 500 RPM; 95 HP (71 kW) at 1,000 RPM
Additional Information

The Chelsea 880 Series is suited for high-torque, variable-speed applications across oil and gas, aerial, mining, and on-highway markets. The 880 Series supports continuous operation with a 30% de-rating applied. Multiple output flange options are available within the 880 Series, including SAE B, SAE C, and ISO 7652 pump flanges in addition to the 1410 driveline companion flange on this unit. Refer to the Chelsea 880 Series Parts List (HY25-2880-M1_US) and the Chelsea Service Manual (HY25-6880-M1/US) for full assembly and service information.
Parts Manual: Chelsea 880 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.