The Chelsea 489 Series Power Take-Off Assembly, part number 489GQAHX-P3RB or 489GQAHXP3RB, mounts directly to an 8-bolt transmission opening on most manual transmissions including Eaton/Fuller, Volvo/Mack, and Tremec without an adapter plate, eliminating that extra leak path. The one-piece cast iron housing delivers the same intermittent torque capacity as the 442 Series - up to 250 lb-ft (339 Nm) per application pages. Output is a 1-1/4" round shaft with key, and shaft power is rated at 24 HP at 500 RPM or 48 HP at 1,000 RPM. This unit uses the pressure lube configuration (P suffix) and shifts via wire/cable mechanical actuation. Strong tapered bearings replace needle bearings for greater load-bearing capability. Call us to confirm proper fit for your transmission.
The Chelsea 489 Series is suited for utility trucks, dump trucks, snow and ice removal equipment, and fire and rescue applications. The integral 8-bolt housing eliminates the need for an adapter plate, reducing potential leak paths compared to traditional mounting. Tapered bearings provide greater load-bearing capability than needle bearing designs. The 489 Series shares internal parts with the Chelsea 442 Series, which simplifies parts stocking for fleets running both PTO families. Twenty-seven output configurations are available across the series, including 360-degree rotatable flange options with greaseable output shafts to reduce pump shaft spline fretting and corrosion.
Features
8-bolt one-piece cast iron housing mounts directly to transmission opening - no adapter plate needed
Wire/cable mechanical shift actuation
1-1/4" round output shaft with key
Shaft power: 24 HP at 500 RPM, 48 HP at 1,000 RPM
Pressure lube configuration (P suffix); internal parts common to Chelsea 442 Series
Kit-style design simplifies service and rebuild
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); check application pages for actual torque ratings
- 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
- LUBRICANT: Pressure Lube (P)
- TRANSMISSION COMPATIBILITY: Eaton/Fuller, Volvo/Mack, and other manual transmissions with 8-bolt PTO aperture
Additional Information
The Chelsea 489 Series is suited for utility trucks, dump trucks, snow and ice removal equipment, and fire and rescue applications. The integral 8-bolt housing eliminates the need for an adapter plate, reducing potential leak paths compared to traditional mounting. Tapered bearings provide greater load-bearing capability than needle bearing designs. The 489 Series shares internal parts with the Chelsea 442 Series, which simplifies parts stocking for fleets running both PTO families. Twenty-seven output configurations are available across the series, including 360-degree rotatable flange options with greaseable output shafts to reduce pump shaft spline fretting and corrosion.
