The Chelsea 489 Series Power Take-Off Assembly, part number 489XFAHX-S5RB or 489XFAHXS5RB, mounts directly to the 8-bolt transmission opening on most manual transmissions including Eaton Fuller, Volvo, Mack, and Tremec without an adapter plate, removing a potential leak path. The one-piece cast iron housing delivers the same intermittent torque capacity as the 442 Series. Shift is wire/cable mechanical. The 1-1/4" round output shaft accepts a key. Shaft power runs 24 HP at 500 RPM and 48 HP at 1,000 RPM, with output power in the 46-55 HP range. Internal parts are shared with the 442 Series, keeping bench service straightforward. Call us to confirm proper fit for your specific transmission and application.

The Chelsea 489 Series is designed for aerial, vocational, and municipal equipment applications including utility trucks, snow and ice removal, dump trucks, and fire and rescue vehicles. Twenty-seven output options are available across the 489 Series, including a 360-degree rotatable flange with greaseable shaft to reduce pump shaft spline fretting and corrosion. Eleven internal speed ratios and shift options are offered within the series. For service documentation, reference Chelsea 489 Series Parts List HY25-2442-M1_US and Chelsea Service Manual HY25-6489-M1/US.
Features
8-bolt integral cast iron housing mounts directly to transmission opening, no adapter plate required
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
Output power range: 46-55 HP (31-40 kW)
Kit-style construction with internal parts common to the Chelsea 442 Series simplifies service
Tech Specs
- PRODUCT SERIES: 489
- MOUNTING TYPE: 8-Bolt (integral cast iron housing, no adapter plate)
- SHIFT TYPE: Wire/Cable Mechanical
- OUTPUT SHAFT TYPE: 1-1/4" Round with Key
- INTERMITTENT TORQUE: 201-300 lb-ft (301-400 Nm) - Check application pages for actual torque ratings
- OUTPUT POWER: 46-55 HP (31-40 kW)
- SHAFT POWER: 24 HP (18 kW) at 500 RPM; 48 HP (36 kW) at 1,000 RPM
- TRANSMISSION COMPATIBILITY: Eaton/Fuller, Volvo/Mack, and other manual transmissions with 8-bolt PTO aperture
- LUBRICANT: X = No Pressure Lube; P = Pressure Lube
Additional Information

The Chelsea 489 Series is designed for aerial, vocational, and municipal equipment applications including utility trucks, snow and ice removal, dump trucks, and fire and rescue vehicles. Twenty-seven output options are available across the 489 Series, including a 360-degree rotatable flange with greaseable shaft to reduce pump shaft spline fretting and corrosion. Eleven internal speed ratios and shift options are offered within the series. For service documentation, reference Chelsea 489 Series Parts List HY25-2442-M1_US and Chelsea Service Manual HY25-6489-M1/US.
