Features
10-bolt mounting pattern fits Allison automatic transmissions
Constant mesh (non-shiftable) design suited for continuous load-sensing pump duty
1-1/4" round output shaft with key
Intermittent torque rating: up to 335 lb-ft (454 Nm) - check application pages for actual torque ratings
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
- MOUNTING TYPE: 10-Bolt
- SHIFT TYPE: Constant Mesh
- TRANSMISSION MANUFACTURER: Allison
- OUTPUT SHAFT TYPE: 1-1/4" Round with Key
- INTERMITTENT TORQUE: 335 lb-ft / 454 Nm (Check Application Pages for Actual Torque Ratings)
- 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 with multiple output flange configurations including SAE B, SAE C, and ISO 7652 pump flanges, as well as driveline outputs. The series supports continuous operation with a 30% de-rating and is commonly specified for snow plow trucks, small refuse trucks, and yard jockey trucks. Five speed ratios are available within the 267 Series lineup. Contact Pro Gear and Transmission to confirm which ratio and output configuration this specific model number represents for your application.
Parts Manual: Chelsea 267 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
