Description
Chelsea part number 489XXAHX-A3XK or 489XXAHXA3XK is a 489 Series Power Take-Off assembly for manual transmissions with an 8-bolt PTO mounting aperture, including Eaton Fuller, Mack, and Tremec applications. The one-piece cast iron housing bolts directly to the 8-bolt opening, eliminating the need for an adapter plate and reducing potential leak paths. This unit delivers intermittent torque in the 201-300 lb-ft range and shaft power of 24 HP at 500 RPM or 48 HP at 1,000 RPM. The output shaft is a 1-1/4″ round with key. Shift is wire/cable mechanical. Internal parts are common to the Chelsea 442 Series, and the kit-style design simplifies servicing. Call us to confirm proper fit for your specific transmission and application.
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; greaseable output options reduce spline fretting and corrosion
Intermittent torque rating 201-300 lb-ft; shaft power 24 HP at 500 RPM, 48 HP at 1,000 RPM
Internal parts common to Chelsea 442 Series simplify parts sourcing and service
Kit-style construction makes field service straightforward
Tech Specs
- PRODUCT SERIES: 489
- MOUNTING TYPE: 8-Bolt (direct to transmission, no adapter plate required)
- 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)
- SHAFT POWER: 24 HP at 500 RPM; 48 HP at 1,000 RPM (18 kW at 500 RPM; 36 kW at 1,000 RPM)
- OUTPUT POWER: 46-55 HP / 31-40 kW
- TRANSMISSION MANUFACTURER COMPATIBILITY: Eaton/Fuller, Volvo/Mack, Other (manual transmissions with 8-bolt aperture)
- LUBRICANT: X = No Pressure Lube; P = Pressure Lube








