The Chelsea 267XBFJP-M5GA or 267XBFJPM5GA is a constant mesh, 10-bolt Power Take-Off Assembly from the Chelsea 267 Series, engineered to fit Allison automatic transmissions. It delivers intermittent torque in the 301-400 lb-ft range (335 lb-ft, check application pages for your actual rating) and shaft power of 32 HP at 500 RPM or 64 HP at 1,000 RPM. The output shaft is a 1-1/4" round with keyway. This series exceeds the torque capacity of a 6-bolt PTO while providing the tighter sealing of the 10-bolt mounting pattern, making it a practical fit for variable displacement piston pump applications on refuse trucks, snow and ice equipment, and yard jockey trucks. The 267 Series supports continuous operation with a 30% de-rating. Call us to confirm proper fit for your specific application.

The Chelsea 267 Series is available with the SuperTorque option, providing up to 20% more torque capacity than a standard 267 Series unit. Output flange options across the 267 Series include SAE B, SAE C, and ISO 7652 pump flanges, as well as driveline outputs. The 360-degree rotatable flange design allows installation flexibility where clearance is limited. Wet spline lubrication and greaseable shaft options are available to reduce wear at the PTO-to-pump interface. Common applications for the 267 Series include snow plow trucks, small refuse trucks, and yard jockey trucks.
Features
10-bolt mounting pattern for tighter sealing than a 6-bolt PTO
Constant mesh design, non-shiftable, suited for continuous load-sensing pump operation
Intermittent torque rating: 335 lb-ft / 454 Nm (verify actual rating on application pages)
Shaft power: 32 HP at 500 RPM, 64 HP at 1,000 RPM
1-1/4" round output shaft with keyway
Rotatable flanges for improved clearance; wet spline or greaseable shaft option to extend PTO and pump shaft life
Tech Specs
- INTERMITTENT TORQUE: 335 lb-ft / 454 Nm (check application pages for actual torque ratings for your application)
- MOUNTING TYPE: 10-Bolt
- SHIFT TYPE: Constant Mesh
- OUTPUT SHAFT TYPE: 1-1/4" Round with keyway
- OUTPUT POWER: 56+ HP / 41-50 kW
- SHAFT POWER: 32 HP (500 RPM), 64 HP (1,000 RPM) / 24 kW (500 RPM), 48 kW (1,000 RPM)
- TRANSMISSION MANUFACTURER: Allison
- CONTINUOUS OPERATION: Yes, with 30% de-rating
Additional Information

The Chelsea 267 Series is available with the SuperTorque option, providing up to 20% more torque capacity than a standard 267 Series unit. Output flange options across the 267 Series include SAE B, SAE C, and ISO 7652 pump flanges, as well as driveline outputs. The 360-degree rotatable flange design allows installation flexibility where clearance is limited. Wet spline lubrication and greaseable shaft options are available to reduce wear at the PTO-to-pump interface. Common applications for the 267 Series include snow plow trucks, small refuse trucks, and yard jockey trucks.
