Description
The Chelsea 489 Series Power Take-Off Assembly, part number 489XHAHX-P3XD or 489XHAHXP3XD, mounts directly to an 8-bolt transmission opening on most manual transmissions including Eaton Fuller, Volvo/Mack, and Tremec applications. The one-piece cast iron housing eliminates the need for an adapter plate, removing a potential leak path. Shift type is wire/cable mechanical. The 1-1/4″ round output shaft with key accepts a wide range of driven accessories. Intermittent torque capacity for the 489 Series matches the 442 Series at 250 lb-ft (339 Nm); shaft power is rated at 24 HP at 500 RPM and 48 HP at 1,000 RPM. The “P” suffix in the part number designates pressure lubrication. Internal components are common to the Chelsea 442 Series, simplifying parts sourcing and service. Call us to confirm proper fit for your transmission and application.
Features
8-bolt one-piece cast iron housing mounts directly to transmission opening without an adapter plate
Wire/cable mechanical shift; Electric over Air shift option available within the 489 Series
Intermittent torque rating: 250 lb-ft (339 Nm) – check application pages for actual torque rating
Shaft power: 24 HP at 500 RPM, 48 HP at 1,000 RPM
1-1/4″ round output shaft with key; greaseable output options available
Internal parts common to Chelsea 442 Series; kit-style design simplifies service
Tech Specs
- PRODUCT SERIES: 489
- MOUNTING TYPE: 8-Bolt (one-piece cast iron housing, no adapter plate required)
- SHIFT TYPE: Wire/Cable Mechanical
- OUTPUT SHAFT TYPE: 1-1/4″ Round with Key
- INTERMITTENT TORQUE: 250 lb-ft / 339 Nm (Check Application Pages for Actual Torque Ratings)
- CONTINUOUS TORQUE: De-rate intermittent torque rating 30% (Check Application Pages for Actual Torque Ratings)
- 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)
- TRANSMISSION COMPATIBILITY: Eaton/Fuller, Volvo/Mack, Tremec, and other manual transmissions with 8-bolt PTO aperture
- LUBRICANT: P = Pressure Lube (as indicated by part number suffix)









