Features
10-bolt mounting pattern fits Allison automatic transmissions
Constant mesh shift type, suitable for continuous-duty mobile applications
335 lb-ft (454 Nm) intermittent torque rating; check application pages for your specific configuration
1-1/4" round output shaft with keyway
Shaft power: 32 HP at 500 RPM, 64 HP at 1,000 RPM
Rotatable flange design provides 360-degree positioning to improve installation clearance
SuperTorque gear option available for applications requiring additional torque capacity
Wet spline or greaseable shaft options available to extend PTO and pump shaft service life
Tech Specs
- INTERMITTENT TORQUE: 335 lb-ft / 454 Nm (Check Application Pages for Actual Torque Ratings); range 301-400 lb-ft / 401-500 Nm
- 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 and SAE C pump flanges, ISO 7652 pump flanges, and driveline outputs. The 267 Series supports continuous operation with a 30% de-rating. Typical applications include snow plow trucks, small refuse trucks, and yard jockey trucks. The SuperTorque option provides up to 20% more torque capacity than a standard 267 Series unit. Wet spline and greaseable shaft options help protect both the PTO and the connected pump shaft in demanding duty cycles.
Parts Manual: Chelsea 267 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
