The Chelsea 447KSESX-W3XK or 447KSESXW3XK is a 447 Series Power Take-Off assembly built around a one-piece input gear designed to eliminate interference problems inside the transmission PTO opening. The 6-bolt mounting configuration requires no adapter plate, and the wire/cable mechanical shift keeps installation straightforward across a wide range of applications. The 1-1/4" round output shaft (with keyway) delivers up to 43 HP at 1000 RPM and 21 HP at 500 RPM. Intermittent torque ratings for this series range from 201-300 lb-ft; check Chelsea application pages for the actual torque rating specific to your installation. Compatible with Eaton/Fuller, ZF, and other transmission manufacturers. Call us to confirm proper fit for your application.

The Chelsea 447 Series uses tapered bearings in place of needle bearings for greater load-bearing capability. The series offers 26 output options, four internal speed ratios, and eleven shift options. The 447 is available with a unique installation kit for Eaton FS series and Nissan/UD MLS series transmissions where required. Typical applications include utility trucks, dump trucks, aerial equipment, snow and ice removal vehicles, and fire and rescue apparatus.
Features
6-bolt mounting, no adapter plate required
Wire/cable mechanical shift type
1-1/4" round output shaft with keyway
Shaft power: 21 HP at 500 RPM, 43 HP at 1000 RPM
Intermittent torque: 201-300 lb-ft series range (verify actual rating on Chelsea application pages)
One-piece input gear design eliminates internal transmission/PTO opening interference
Tech Specs
- Intermittent Torque: 201-300 lb-ft / 301-400 Nm (225 lb-ft / 305 Nm nominal; check Chelsea application pages for actual torque rating)
- Shift Type: Wire/Cable, Mechanical
- Output Power: 36-45 HP / 31-40 kW
- Shaft Power: 21 HP at 500 RPM, 43 HP at 1000 RPM (16 kW at 500 RPM, 32 kW at 1000 RPM)
- Mounting Type: 6-Bolt
- Output Shaft Type: 1-1/4" Round / 1-1/4" Round with Key
- Compatible Transmission Manufacturers: Eaton/Fuller, ZF, Other
Additional Information

The Chelsea 447 Series uses tapered bearings in place of needle bearings for greater load-bearing capability. The series offers 26 output options, four internal speed ratios, and eleven shift options. The 447 is available with a unique installation kit for Eaton FS series and Nissan/UD MLS series transmissions where required. Typical applications include utility trucks, dump trucks, aerial equipment, snow and ice removal vehicles, and fire and rescue apparatus.
Parts Manual: Chelsea 447 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
