Description
The Chelsea 442 Series Power Take-Off, part number 442KQDJX-A3XD or 442KQDJXA3XD, is a 6-bolt mount PTO built for light-to-medium duty vocational applications including tow trucks, dump trucks, and service trucks. This unit runs an air shift actuation, a 0.391:1 gear ratio, and a 1-1/4″ round standard output shaft. Mounting is standard with metric studs. The no-pressure-lube configuration keeps the design simple and service-friendly. The cast iron housing and tapered cone bearings on the output shaft are characteristic of the 442 Series, contributing to its intermittent torque rating of 250 lb-ft. Call us to confirm proper fit for your transmission application.
Features
Chelsea 442 Series, 6-bolt transmission mount with metric studs
Air shift actuation
0.391:1 gear ratio
1-1/4″ round standard output shaft
Cast iron housing with tapered cone bearings on output shaft
No-pressure-lube configuration; greaseable output shafts for extended service life
Tech Specs
- Product Series: 442
- Input Gear Designator: AH
- Gear Ratio: 0.391:1
- Mounting Option: Standard Mount with Metric Studs
- Shift Type: Air Shift
- Output Option: 1-1/4″ Round Standard Shaft
- Assembly: 3
- Lubricant: No Pressure Lube
Additional Information
The Chelsea 442 Series is engineered to fit virtually all existing 6-bolt transmission applications. Thirty-six output options and eleven internal speed ratios make the 442 Series adaptable across a wide range of vocational equipment, including aerial, construction, forestry, fire and rescue, and municipal vehicles. This specific configuration, 442KQDJX-A3XD, pairs air shift with the 0.391:1 ratio and a 1-1/4″ round shaft output, making it a direct-drive-friendly choice for pump or hydraulic system hookups on service and recovery trucks. Parker Chelsea documentation for this series includes the 442 Series Owner’s Manual and the 442 Series Parts List (HY25-2442-M1_US).






