442ZSFNX-A5XK Chelsea PTO Assembly

The Chelsea 442 Series Power Take-Off Assembly, part number 442ZSFNX-A5XK or 442ZSFNXA5XK, is a 2-gear, 6-bolt mount unit built for light-to-medium duty vocational truck applications including tow trucks, dump trucks, and service trucks. This assembly carries a 0.391:1 gear ratio, uses air shift actuation, and delivers power through a 1-1/4" round standard output shaft. Mounting is standard 6-bolt with metric studs. The unit runs without pressure lubrication. The cast iron housing and tapered cone bearings on the output shaft contribute to the 442 Series' torque capability and service life. Call us to confirm proper fit for your transmission application.

Features

Chelsea 442 Series, 2-gear, 6-bolt transmission mount with metric studs
Gear ratio: 0.391:1
Shift type: Air Shift
Output: 1-1/4" round standard shaft
No pressure lubrication required
Cast iron housing with tapered cone bearings on the output shaft
Rotatable output flanges for improved installation clearance
Greaseable output shafts

Tech Specs

• Product Series: 442
• Input Gear Designator: AH
• Gear Ratio: 0.391:1
• Mounting Option: Standard Mount with Metric Studs (6-Bolt)
• 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 designed to fit virtually all existing 6-bolt transmission applications. Typical vocational uses include dump trucks, tow and recovery trucks, service trucks, snow and ice trucks, and aerial units. Parker Chelsea publishes a dedicated service manual (HY25-6442-M1/US) and parts list (HY25-2442-M1_US) for the 442 Series; consult those documents for rebuild specifications and torque values specific to your application. The 442 Series offers thirty-six output options and eleven internal speed ratios across the product family.