The Chelsea 877 Series Power Take-Off, part number 877XBFJP-M3AC or 877XBFJPM3AC, is a 10-bolt, constant-mesh PTO engineered for Allison transmissions. It delivers continuous torque rated up to 670 lb-ft (check application pages for actual torque ratings) and intermittent torque starting at 501 lb-ft. Shaft power is rated at 64 HP at 500 RPM and 128 HP at 1,000 RPM. The output shaft is a 1-1/2" 10-tooth spline with a 1410 companion flange. Constant-mesh design suits continuous-duty applications such as refuse trucks, aerial units, snow and ice equipment, and fire and rescue vehicles. Pro Gear and Transmission supplies this as a genuine Chelsea part. Call us to confirm proper fit for your specific Allison transmission and chassis configuration.
Features
10-bolt mounting for Allison transmission applications
Constant-mesh shift type suits continuous-duty, load-sense pump installations
Output shaft: 1-1/2" 10-tooth spline with 1410 companion flange
Shaft power: 64 HP at 500 RPM, 128 HP at 1,000 RPM
Compact housing height reduces clearance issues during installation
Wet Spline Technology helps extend PTO and pump shaft service life
Tech Specs
- Mounting Type: 10-Bolt
- Transmission Manufacturer: Allison
- Shift Type: Constant Mesh
- Output Shaft Type: 1-1/2" 10-Tooth Spline with 1410 Companion Flange
- Intermittent Torque: 501+ lb-ft / 501+ Nm
- Continuous Torque: 670 lb-ft / 908 Nm (check application pages for actual torque ratings)
- Shaft Power: 64 HP at 500 RPM, 128 HP at 1,000 RPM (48 kW at 500 RPM, 95 kW at 1,000 RPM)
- Output Power: 56+ HP / 51+ kW
Additional Information
Parts Manual: Chelsea 877 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
