The Chelsea 442 Series Power Take-Off, part number 442ZAITX-A3RA or 442ZAITXA3RA, is a 6-bolt transmission-mount PTO built around a cast iron housing with tapered cone bearings on the output shaft. The 442 Series delivers intermittent torque in the 201-300 lb-ft range and output power from 46 to 55 HP, making it suited for light-to-medium duty vocational trucks including tow trucks, dump trucks, service trucks, and small aerial units. Shift is accomplished via air shift actuation. The output shaft is a 7/8-inch 13-tooth SAE B shaft on a rotatable SAE B 2-bolt flange. Chelsea's 442 Series supports up to 36 output configurations and 11 internal speed ratios across the family. Call us to confirm proper fit for your specific transmission and application.
Features
6-bolt transmission mounting for broad compatibility across common heavy-duty transmissions
Cast iron housing with tapered cone bearings on the output shaft for extended service life
Air shift actuation
Rotatable SAE B 2-bolt flange with a 7/8-inch 13-tooth SAE B shaft
Intermittent torque rating: 201-300 lb-ft (check application data for this specific configuration)
Suited for tow trucks, dump trucks, service trucks, and light aerial vocational applications
Tech Specs
- Mounting Type: 6-Bolt
- Mounting Option: Deep Mount (Z)
- Gear Ratio Code: A (14/39)
- Input Gear Designator: IT
- Lube Option: No Pressure Lube (X)
- Shift Option: Air Shift (A)
- Assembly Arrangement: 3
- Output Option: Rotatable SAE B 2-Bolt Flange, SAE B Shaft (7/8" 13T) (RA)
- Intermittent Torque (series): 201-300 lb-ft / 301-400 Nm (verify actual rating for this configuration)
- Output Power (series): 46-55 HP / 31-40 kW
- Shaft Power: 24 HP at 500 RPM, 48 HP at 1000 RPM
- Housing Material: Cast Iron
- Product Series: Chelsea 442
Additional Information
Parts manual and diagrams: Chelsea 442 Series PTO parts list with prices
