The Chelsea 489 Series Power Take-Off, part number 489GQAHX-A3XK or 489GQAHXA3XK, is an 8-bolt PTO designed for manual transmissions including Eaton Fuller, Mack, and Tremec. The one-piece cast iron housing bolts directly to the 8-bolt transmission opening, eliminating the adapter plate that would otherwise add a potential leak path. This unit uses a wire/cable mechanical shift and delivers 46-55 HP output (24 HP at 500 RPM, 48 HP at 1,000 RPM). The 1-1/4" round output shaft with keyway and strong tapered bearings handle the series' intermittent torque rating of 201-300 lb-ft. Internal parts are common with the Chelsea 442 Series, and kit-style construction simplifies servicing. Call us to confirm fitment for your specific transmission and application.

The Chelsea 489 Series fits a broad range of vocational applications including utility trucks, dump trucks, snow and ice removal equipment, and fire and rescue vehicles. Eleven internal speed ratios and multiple shift options make this a versatile platform across aerial, municipal, and other mobile equipment markets. Cross-references for this part include: 1450-489GQAHXA3XK, 1450489GQAHXA3XK, CHL489GQAHXA3XK, S-10740, S10740, TG8BU6808A1KX, WA20-08-7037, and WA20087037.
Features
8-bolt one-piece cast iron housing mounts directly to transmission, removing the need for an adapter plate
Wire/cable mechanical shift with electric-over-air shift option available
1-1/4" round output shaft with keyway; tapered bearings for greater load capacity versus needle bearing designs
Intermittent torque rating: 201-300 lb-ft (301-400 Nm); shaft power 24 HP at 500 RPM, 48 HP at 1,000 RPM
Kit-style construction with internal parts common to the Chelsea 442 Series for simplified servicing
Greaseable output options help 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)
- 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 Type: X = No Pressure Lube; P = Pressure Lube
- Transmission Compatibility: Eaton/Fuller, Volvo/Mack, and other manual transmissions with 8-bolt PTO aperture
- Mounting Bolt Hole Quantity: 8
Additional Information

The Chelsea 489 Series fits a broad range of vocational applications including utility trucks, dump trucks, snow and ice removal equipment, and fire and rescue vehicles. Eleven internal speed ratios and multiple shift options make this a versatile platform across aerial, municipal, and other mobile equipment markets. Cross-references for this part include: 1450-489GQAHXA3XK, 1450489GQAHXA3XK, CHL489GQAHXA3XK, S-10740, S10740, TG8BU6808A1KX, WA20-08-7037, and WA20087037.
