Description
The Chelsea 489XFAHX-A3GA or 489XFAHXA3GA is an 8-bolt power take-off assembly from the 489 Series, designed for manual transmissions including Eaton/Fuller, Volvo/Mack, and Tremec. The one-piece cast iron housing bolts directly to the 8-bolt transmission opening, eliminating the need for an adapter plate and reducing potential leak paths. Shift type is wire/cable mechanical. The 1-1/4″ round output shaft with key delivers shaft power of 24 HP at 500 RPM and 48 HP at 1,000 RPM. Intermittent torque rating for the 489 Series is 201-300 lb-ft; check application pages for the actual rating for your specific configuration. Internal parts are common to the Chelsea 442 Series. Available from Pro Gear and Transmission — call us to confirm proper fit for your transmission and application.
Features
8-bolt one-piece cast iron housing mounts directly to the transmission opening without an adapter plate
Wire/cable mechanical shift type
1-1/4″ round output shaft with key
Shaft power: 24 HP at 500 RPM, 48 HP at 1,000 RPM
Internal parts common to Chelsea 442 Series — broad parts availability
Kit-style design simplifies service and rebuild
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
- OUTPUT POWER: 46-55 HP (31-40 kW)
- SHAFT POWER: 24 HP (18 kW) at 500 RPM; 48 HP (36 kW) at 1,000 RPM
- INTERMITTENT TORQUE (series rating): 201-300 lb-ft (301-400 Nm) — check application pages for actual torque rating
- TRANSMISSION MANUFACTURER COMPATIBILITY: Eaton/Fuller, Volvo/Mack, Tremec, and other manual transmissions with 8-bolt PTO aperture
- LUBRICATION: X suffix = no pressure lube; P suffix = pressure lube
Additional Information
The Chelsea 489 Series PTO is suited for utility trucks, dump trucks and trailers, snow and ice removal equipment, and fire and rescue vehicles. The series offers 27 output options including a 360-degree rotatable flange with greaseable shaft, which reduces pump shaft spline fretting and corrosion. Tapered bearings replace needle bearings for greater load-bearing capability. Eleven internal speed ratios are available across the 489 Series lineup.
