Description
The Chelsea 489 Series Power Take-Off Assembly, part number 489XFAHX-A5GK or 489XFAHXA5GK, mounts directly to an 8-bolt transmission opening on most manual transmissions including Eaton Fuller, Mack, and Tremec. The one-piece cast iron housing eliminates the adapter plate found on older designs, removing a common leak path. Intermittent torque rating for the 489 Series is 250 lb-ft (339 Nm); continuous-duty applications should de-rate 30% (check application pages for actual ratings). Shift is wire/cable mechanical, with an electric-over-air option available. The 1-1/4″ round output shaft (keyed) accepts a wide range of output configurations, including Chelsea’s 360-degree rotatable flange. Internal components are common with the 442 Series, so spare parts are easy to source. Call us to confirm proper fit for your specific transmission.
Features
8-Bolt direct-mount housing fits most manual transmissions including Eaton Fuller, Mack, and Tremec
One-piece cast iron housing eliminates the adapter plate and reduces potential leak paths
250 lb-ft (339 Nm) intermittent torque capacity; de-rate 30% for continuous-duty use
Wire/cable mechanical shift standard; electric-over-air shift option available
1-1/4″ round keyed output shaft with greaseable output options to reduce spline fretting
Kit-style construction with internal parts common to the Chelsea 442 Series for straightforward servicing
Tech Specs
- PRODUCT SERIES: 489
- MOUNTING TYPE: 8-Bolt
- SHIFT TYPE: Wire/Cable Mechanical (Electric over Air option available)
- OUTPUT SHAFT TYPE: 1-1/4″ Round with key
- INTERMITTENT TORQUE: 250 lb-ft / 339 Nm (Check Application Pages for Actual Torque Ratings; de-rate 30% for continuous duty)
- OUTPUT POWER: 46-55 HP / 31-40 kW
- SHAFT POWER: 24 HP (500 RPM), 48 HP (1000 RPM) / 18 kW (500 RPM), 36 kW (1000 RPM)
- TRANSMISSION COMPATIBILITY: Eaton/Fuller, Volvo/Mack, and other manual transmissions with 8-bolt PTO aperture
- LUBRICANT: X = No Pressure Lube, P = Pressure Lube








