The Chelsea 489GRAHX-P3GH 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 uses mechanical wire/cable shift and features a 1-1/4" round keyed output shaft with pressure lubrication (P-designation). The 489 Series carries an intermittent torque rating of 201-300 lb-ft and delivers up to 48 HP at 1,000 RPM. Tapered bearings replace needle bearings for greater load-bearing capability. Common applications include utility trucks, dump trucks, and snow and ice removal equipment. A genuine Chelsea part available from Pro Gear and Transmission.
Features
8-bolt direct mount housing eliminates adapter plate and reduces leak paths
Mechanical wire/cable shift operation
1-1/4" round keyed output shaft with pressure lubrication
Intermittent torque rating: 201-300 lb-ft (301-400 Nm)
Tapered bearings for greater load capacity versus needle bearings
Internal parts common to Chelsea 442 Series for easier serviceability
Tech Specs
- Series: Chelsea 489
- Mounting Type: 8-Bolt
- Shift Type: Mechanical - Wire/Cable
- Output Shaft: 1-1/4" Round Key
- Lubrication: Pressure Lube
- 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 1,000 RPM
- Housing Material: Cast Iron
Additional Information
The Chelsea 489 Series is compatible with most manual transmissions featuring an 8-bolt PTO aperture, including Eaton Fuller, Mack, and Tremec. The series offers eleven internal speed ratios and twenty-seven output configurations, including a 360-degree rotatable flange option. Internal components are shared with the Chelsea 442 Series, simplifying parts inventory for shops already familiar with that platform. Typical markets include aerial equipment, vocational and municipal equipment, utility trucks, dump trucks, fire and rescue, and snow and ice removal.Parts Manual: Chelsea 489 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
