The Chelsea 489 Series Power Take-Off 489ZFDAX-A5XDK or 489ZFDAXA5XDK is a wire/cable mechanical shift PTO built for manual transmissions with an 8-bolt mounting aperture, including Eaton/Fuller, Volvo/Mack, and Tremec applications. The one-piece cast iron housing bolts directly to the 8-bolt transmission opening, eliminating the adapter plate and reducing potential leak paths. Output is through a 1-1/4" round shaft with key, rated at 24 HP at 500 RPM and 48 HP at 1,000 RPM. Intermittent torque capacity for the 489 Series runs 201-300 lb-ft. Internal parts are common to the Chelsea 442 Series, and the kit-style design simplifies service. An electric-over-air shift option is available within the series. Call us to confirm proper fit for your specific transmission.

The Chelsea 489 Series is suited for utility trucks, dump truck and trailer applications, snow and ice removal, and fire and rescue equipment. The series offers eleven internal speed ratios and twenty-seven output options, including a 360-degree rotatable flange with greaseable shaft to reduce pump shaft spline fretting and corrosion. Tapered bearings replace needle bearings for greater load-bearing capability. For full service and parts information, refer to the 489 Series Parts List (HY25-2442-M1_US) and the Chelsea Service Manual (HY25-6489-M1/US).
Features
8-bolt one-piece cast iron housing mounts directly to transmission opening, no adapter plate needed
Wire/cable mechanical shift; electric-over-air shift option also available in the 489 Series
1-1/4" round output shaft with key
Shaft power: 24 HP at 500 RPM, 48 HP at 1,000 RPM
Intermittent torque: 201-300 lb-ft (series rating; check application pages for actual torque)
Kit-style construction with internal parts common to Chelsea 442 Series for simplified service
Tech Specs
- PRODUCT SERIES: 489
- MOUNTING TYPE: 8-Bolt
- SHIFT TYPE: Wire/Cable Mechanical
- OUTPUT SHAFT TYPE: 1-1/4" Round with Key
- OUTPUT POWER: 46-55 HP (31-40 kW)
- SHAFT POWER: 24 HP (500 RPM), 48 HP (1,000 RPM) / 18 kW (500 RPM), 36 kW (1,000 RPM)
- INTERMITTENT TORQUE: 201-300 lb-ft / 301-400 Nm (check application pages for actual torque ratings)
- TRANSMISSION COMPATIBILITY: Eaton/Fuller, Volvo/Mack, Tremec, and other manual transmissions with 8-bolt PTO aperture
- LUBRICANT: X = No Pressure Lube, P = Pressure Lube
Additional Information

The Chelsea 489 Series is suited for utility trucks, dump truck and trailer applications, snow and ice removal, and fire and rescue equipment. The series offers eleven internal speed ratios and twenty-seven output options, including a 360-degree rotatable flange with greaseable shaft to reduce pump shaft spline fretting and corrosion. Tapered bearings replace needle bearings for greater load-bearing capability. For full service and parts information, refer to the 489 Series Parts List (HY25-2442-M1_US) and the Chelsea Service Manual (HY25-6489-M1/US).
