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877-XL Series Constant Mesh Power Take-Off

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877-XL Series

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Designed for Allison transmissions with cooler or retarder options, the Chelsea 877-XL Series PowerShift PTO allows direct mounted pumps to be moved further rearward in the truck chassis.

* Representative Image

Extended shaft PTOs fit neatly between the transmission and frame rail of the truck and locates the pump rear of the transmission where it’s common for space to be available. The 877-XL retains the same robust qualities (a continuous rating of up to 670 lbs-ft) of its 877 Series sibling including high capacity bearings and superior gear designs. Versatitlity, power, ease of maintenance and installation make the 877 Series the best choice for Snow & Ice, Refuse, Aerial, and Defense truck requirements.


  • Aerial
  • Defense
  • On-Highway
  • Other Mobile

Features and Benefits:

  • Compact housing height reduces clearance issues
  • Rotatable Output Flanges to maximize clearance
  • Wet Spline Technology to extend PTO & pump shaft life
  • Two Year Warranty


  • Fire & Rescue Trucks
  • Pumper Cleaner
  • Oil & Gas
  • Refuse Trucks
  • Snow & Ice

Continuous Torque:

  • 670 lb-ft (Check Application Pages for Actual Torque Ratings)
  • 908 Nm (Check Application Pages for Actual Torque Ratings)

Mounting Type:

  • 10-Bolt

Output Shaft Type:

  • 1410 Companion Flange
  • 1-1/2" 10T Spline w/1410 flange

Output Power:

  • 56+ HP
  • 51+ kW

Transmission Manufacturer:

  • Other
  • Allison

Shift Type:

  • Constant Mesh

Shaft Power:

  • 500 RPM: 64, 1000: RPM 128 HP
  • 500 RPM: 48, 1000: RPM 95 kW