The Chelsea 267 Series Power Take-Off Assembly, part number 267XBFJP-M5RF or 267XBFJPM5RF, is a 10-bolt constant mesh PTO engineered to fit Allison automatic transmissions. It delivers shaft power of 32 HP at 500 RPM and 64 HP at 1,000 RPM, with an intermittent torque rating of 301-400 lb-ft (check application pages for your actual torque rating). The 1-1/4" round output shaft with keyway makes hydraulic pump mounting straightforward on refuse trucks, snow and ice removal units, yard jockey trucks, and aerial equipment. Chelsea's 360-degree rotatable flange design gives installers clearance flexibility, and the SuperTorque gear option adds up to 20% more torque capacity when your application demands it. Call us to confirm proper fit for your transmission and pump configuration.

The Chelsea 267 Series is available in five speed ratios and multiple output configurations, including SAE B pump flange, SAE C pump flange, ISO 7652 pump flange, and driveline outputs. Continuous operation is supported with a 30% de-rating applied. Typical applications include snow plow trucks, small refuse trucks, yard jockey trucks, aerial equipment, and military vehicles. The 267 Series exceeds the torque capacity of a standard 6-bolt PTO while offering the tighter sealing of a 10-bolt pattern.
Features
10-Bolt mounting pattern fits Allison automatic transmissions
Constant mesh (non-shiftable) design suited for continuous load-sensing pump applications
1-1/4" round output shaft with keyway
Shaft power: 32 HP at 500 RPM, 64 HP at 1,000 RPM
360-degree rotatable flanges for improved installation clearance
SuperTorque gear option available for up to 20% additional torque capacity
Wet spline or greaseable shaft options to extend PTO and pump shaft service life
Tech Specs
- INTERMITTENT TORQUE: 301-400 lb-ft / 401-500 Nm (335 lb-ft / 454 Nm nominal - check application pages for actual torque ratings)
- MOUNTING TYPE: 10-Bolt
- SHIFT TYPE: Constant Mesh
- TRANSMISSION MANUFACTURER: Allison
- OUTPUT SHAFT TYPE: 1-1/4" Round with keyway
- OUTPUT POWER: 56+ HP / 41-50 kW
- SHAFT POWER: 32 HP at 500 RPM, 64 HP at 1,000 RPM (24 kW at 500 RPM, 48 kW at 1,000 RPM)
Additional Information

The Chelsea 267 Series is available in five speed ratios and multiple output configurations, including SAE B pump flange, SAE C pump flange, ISO 7652 pump flange, and driveline outputs. Continuous operation is supported with a 30% de-rating applied. Typical applications include snow plow trucks, small refuse trucks, yard jockey trucks, aerial equipment, and military vehicles. The 267 Series exceeds the torque capacity of a standard 6-bolt PTO while offering the tighter sealing of a 10-bolt pattern.
