The Chelsea 489GFAHX-V3GK is an 8-bolt Power Take-Off unit from the Chelsea 489 Series, designed for direct mounting to 8-bolt manual transmission openings on applications such as Eaton Fuller, Mack, and Tremec gearboxes. The one-piece cast iron housing eliminates the need for an adapter plate, reducing potential leak paths and cutting installation time. The 489 Series delivers intermittent torque in the 201-300 lb-ft range and up to 46-55 HP output, backed by strong tapered bearings for greater load-bearing capability versus needle-bearing designs. Air shift and a greaseable SAE B 2 or 4-bolt flange with a 7/8" 13-tooth SAE B shaft are characteristic of this unit. Pro Gear and Transmission carries this genuine Chelsea unit.
Features
8-Bolt mounting - bolts directly to 8-bolt manual transmission openings without an adapter plate
Air shift type
Greaseable SAE B 2 or 4-bolt flange with a 7/8" 13-tooth SAE B shaft
Intermittent torque rating: 201-300 lb-ft (301-400 Nm) for the 489 Series
Output power: 46-55 HP (34-41 kW) for the 489 Series
Tagered bearings for greater load capacity versus needle-bearing alternatives
One-piece cast iron housing reduces potential leak paths
Tech Specs
- Series: Chelsea 489
- Mounting Type: 8-Bolt
- Mounting Option: Standard Mount with Metric Studs (G)
- Gear Ratio Code: F (21/37)
- Input Gear Designator: AH
- Lube Option: No Pressure Lube (X)
- Shift Option: Air Shift without Installation Kit (V)
- Assembly Arrangement: 3
- Output Option: Greaseable SAE B 2 or 4-Bolt Flange, SAE B Shaft (7/8" 13T) (GK)
- Intermittent Torque (Series): 201-300 lb-ft / 301-400 Nm
- Output Power (Series): 46-55 HP / 31-40 kW
- Shaft Power: 24 HP at 500 RPM / 48 HP at 1000 RPM
- Housing Material: One-piece cast iron
Additional Information
The Chelsea 489 Series fits most manual transmissions with an 8-bolt PTO aperture, including Eaton Fuller, Eaton Endurant, Mack, and Tremec. Typical vocational applications include utility trucks, dump trucks and trailers, snow and ice removal equipment, and fire and rescue vehicles. Internal parts are common to the Chelsea 442 Series, simplifying service and parts inventory. Kit-style construction allows field servicing without specialized tooling. Twenty-seven output options are available across the 489 Series, including Chelsea's 360-degree rotatable flange with greaseable shaft to reduce pump shaft spline fretting and corrosion. Eleven internal speed ratios are offered across the series. For service documentation, reference Chelsea Service Manual HY25-6489-M1/US and 489 Series Parts List HY25-2442-M1_US.Parts manual and diagrams: Chelsea 489 Series PTO parts list with prices
