Description
The Chelsea 489 Series Power Take-Off 489GRAHX-P3XK or 489GRAHXP3XK mounts directly to an 8-bolt transmission opening on most manual transmissions including Eaton Fuller, Volvo, Mack, and Tremec units. The one-piece cast iron housing eliminates the need for an adapter plate, removing a potential leak path at that joint. Intermittent torque rating for the 489 Series is 250 lb-ft (339 Nm); shaft power is 24 HP at 500 RPM and 48 HP at 1000 RPM. Output shaft is a 1-1/4″ round with key. This unit uses a wire/cable mechanical shift and runs pressure lube (P designation). Internal components are common to the Chelsea 442 Series, and the kit-style design simplifies servicing in the field. Call us to confirm proper fit for your application.
Features
8-bolt one-piece cast iron housing mounts directly to transmission opening, no adapter plate required
Wire/cable mechanical shift with electric-over-air shift option available in the 489 Series
1-1/4″ round output shaft with key; pressure lube (P) configuration
Intermittent torque: 250 lb-ft (339 Nm); shaft power 24 HP at 500 RPM, 48 HP at 1000 RPM
Internal parts common to Chelsea 442 Series for easier parts sourcing and service
Kit-style construction for straightforward field service and rebuild
Tech Specs
- PRODUCT SERIES: 489
- MOUNTING TYPE: 8-Bolt, one-piece cast iron housing (no adapter plate)
- SHIFT TYPE: Wire/Cable Mechanical
- OUTPUT SHAFT TYPE: 1-1/4″ Round with Key
- LUBRICANT: Pressure Lube (P designation)
- INTERMITTENT TORQUE: 250 lb-ft / 339 Nm (check application pages for actual torque ratings)
- CONTINUOUS TORQUE: De-rate intermittent rating by 30% (check application pages for actual torque ratings)
- 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, Tremec, and other manual transmissions with 8-bolt PTO opening









