Description
The Chelsea 489GRITX-A3XK or 489GRITXA3XK is a 489 Series Power Take-Off assembly designed for manual transmissions with an 8-bolt PTO mounting aperture, including Eaton Fuller, Mack, and Tremec units. Its one-piece cast iron housing bolts directly to the 8-bolt opening, eliminating the need for an adapter plate and reducing potential leak paths. Shift is wire/cable mechanical. The output shaft is a 1-1/4″ round with key. Intermittent torque for the 489 Series is 201-300 lb-ft; shaft power is rated at 24 HP at 500 RPM and 48 HP at 1,000 RPM. Output power falls in the 46-55 HP range. Internal parts are common to the Chelsea 442 Series. Available with greaseable output options. Sold by Pro Gear and Transmission. Call us to confirm fitment for your specific transmission.
Features
489 Series, 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
1-1/4″ round output shaft with key
Intermittent torque: 201-300 lb-ft (301-400 Nm); shaft power 24 HP at 500 RPM, 48 HP at 1,000 RPM
Internal parts common to Chelsea 442 Series, supporting broad parts availability
Greaseable output options to reduce pump shaft spline fretting and corrosion
Tech Specs
- PRODUCT SERIES: 489
- MOUNTING TYPE: 8-Bolt
- SHIFT TYPE: Wire/Cable Mechanical
- OUTPUT SHAFT TYPE: 1-1/4″ Round with Key
- INTERMITTENT TORQUE: 201-300 lb-ft (301-400 Nm)
- SHAFT POWER: 24 HP (500 RPM), 48 HP (1,000 RPM) / 18 kW (500 RPM), 36 kW (1,000 RPM)
- OUTPUT POWER: 46-55 HP (31-40 kW)
- TRANSMISSION MANUFACTURER: Eaton/Fuller, Volvo/Mack, Other
- LUBRICANT: X = No Pressure Lube, P = Pressure Lube









