The Chelsea 823 Series Power Take-Off Assembly, part number 823XMAKP-Y6XV or 823XMAKPY6XV, is an extra heavy-duty PTO built for high-torque applications including oil field, logging, and pumper cleaner trucks. It mounts via an 8-bolt pattern and fits automatic and manual transmissions from Eaton/Fuller, Volvo/Mack, Allison, and other manufacturers. The lever/mechanical shift operates a 1-1/2"-10T spline output shaft with a 1410 series companion flange. Intermittent torque is rated at 500 lb-ft (678 Nm) - check application pages for actual torque ratings. Shaft power output reaches 95 HP at 1000 RPM. The cast iron housing carries tapered cone bearings on the output shaft for greater load-bearing capability. Call us to confirm proper fit for your application.

The Chelsea 823 Series is designed for demanding duty cycles in oil field, logging, and mining applications. The series supports continuous operation with a 30% de-rating. Seven internal speed ratios are available across the 823 Series, giving fleet operators flexibility when matching PTO output to driven equipment requirements. The 823 Series also accommodates SAE C pump flange and DIN output configurations within the broader product family - this specific unit ships with the 1410 companion flange. Contact Pro Gear and Transmission to match the correct ratio and shift configuration for your chassis.
Features
8-Bolt mounting pattern fits automatic and manual transmissions from Eaton/Fuller, Volvo/Mack, Allison, and other manufacturers
Lever and mechanical shift type; air shift also available in the 823 Series
1-1/2" - 10T spline output shaft with 1410 series companion flange
Intermittent torque rated at 500 lb-ft (678 Nm) - verify actual rating on application pages
Shaft power output: 48 HP (36 kW) at 500 RPM; 95 HP (71 kW) at 1000 RPM
Direct mount pump outputs; cast iron housing with tapered cone bearings on output shaft
Tech Specs
- Intermittent Torque: 500 lb-ft / 678 Nm (Check Application Pages for Actual Torque Ratings)
- Shift Type: Lever, Mechanical (Air Shift also available in 823 Series)
- Output Power: 56+ HP / 51+ kW
- Transmission Manufacturer Compatibility: Eaton/Fuller, Volvo/Mack, Allison, Other
- 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 1000 RPM
Additional Information

The Chelsea 823 Series is designed for demanding duty cycles in oil field, logging, and mining applications. The series supports continuous operation with a 30% de-rating. Seven internal speed ratios are available across the 823 Series, giving fleet operators flexibility when matching PTO output to driven equipment requirements. The 823 Series also accommodates SAE C pump flange and DIN output configurations within the broader product family - this specific unit ships with the 1410 companion flange. Contact Pro Gear and Transmission to match the correct ratio and shift configuration for your chassis.