The Chelsea 489XFAHX-A5AK is an 8-bolt Power Take-Off unit from the Chelsea 489 Series, designed to mount directly to manual transmissions including Eaton Fuller, Mack, and Tremec without an adapter plate. The one-piece cast iron housing integrates the 8-bolt mount to reduce potential leak paths and installation time. The 489 Series delivers intermittent torque of 201-300 lb-ft and output power of 46-55 HP, with a 1-1/4" round keyed output shaft. Wire and cable mechanical shift is standard. Tapered bearings replace needle bearings for improved load capacity. Internal parts are common to the Chelsea 442 Series.
Features
8-bolt direct mount to transmission opening, no adapter plate required
One-piece cast iron housing reduces potential leak paths
Intermittent torque rating: 201-300 lb-ft (301-400 Nm)
Output power: 46-55 HP (34-41 kW)
1-1/4" round keyed output shaft
Tapered bearings for increased load-bearing capacity
Wire/cable mechanical shift
Tech Specs
- Series: Chelsea 489
- Part Number: 489XFAHX-A5AK
- Mounting Type: 8-Bolt
- Shift Type: Wire/Cable, Mechanical
- Intermittent Torque: 201-300 lb-ft (301-400 Nm)
- Output Power: 46-55 HP (31-40 kW)
- Shaft Power: 24 HP at 500 RPM / 48 HP at 1000 RPM
- Output Shaft Type: 1-1/4" Round Shaft with Key
- Housing Material: One-piece cast iron
- Compatible Transmissions: Eaton Fuller, Mack, Tremec (8-bolt aperture manual transmissions)
Additional Information
The Chelsea 489 Series is suited for aerial, vocational, and municipal equipment applications including utility trucks, snow and ice removal equipment, fire and rescue vehicles, and dump trucks. The series offers eleven internal speed ratios and twenty-seven output options, including a 360-degree rotatable flange with greaseable shaft to reduce pump shaft spline fretting and corrosion. Internal components are shared with the Chelsea 442 Series, simplifying parts inventory and service. For technical documentation, Parker publishes the 489 Series Parts List (HY25-2442-M1_US) and Chelsea Service Manual (HY25-6489-M1/US).Parts Manual: Chelsea 489 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
