The Chelsea 489 Series Power Take-Off Assembly, part number 489XLAHX-W3XK or 489XLAHXW3XK, mounts directly to the 8-bolt transmission opening on most manual transmissions including Eaton/Fuller, Volvo/Mack, and Tremec units. The one-piece cast iron housing eliminates the need for an adapter plate, reducing potential leak paths. Intermittent torque capacity for the 489 Series is 201-300 lb-ft (301-400 Nm); check application pages for the actual rating specific to your configuration. Output is an SAE B 2 or 4-bolt flange with a 7/8" 13-tooth SAE B shaft. Shift is wire/cable mechanical. Output power reaches 46-55 HP (31-40 kW), with shaft power rated at 24 HP at 500 RPM and 48 HP at 1000 RPM. Available from Pro Gear and Transmission - call to confirm fit for your transmission.

The Chelsea 489 Series PTO is suited for aerial, vocational, and municipal equipment applications including utility trucks, snow and ice removal, fire and rescue, and dump truck service. The 489 Series features tapered bearings rather than needle bearings for increased load-bearing capability. Twenty-seven output options are available across the series, including Chelsea's 360-degree rotatable flange with greaseable shaft to help reduce pump shaft spline fretting and corrosion. Eleven internal speed ratios and shift configurations are offered within the series. For detailed parts information, refer to Chelsea 489 Series Parts List HY25-2442-M1_US and Service Manual HY25-6489-M1/US.
Interchanges:
- 1450-489XLAHXW3XK
- SE778
- TG8SU6807C1KX
- WA20-08-7058
Features
8-bolt one-piece cast iron housing mounts directly to transmission opening - no adapter plate required
Wire/cable mechanical shift; electric-over-air shift option available within the 489 Series
Intermittent torque rating 201-300 lb-ft (301-400 Nm) for the 489 Series
Output shaft: 7/8" 13-tooth SAE B shaft on an SAE B 2 or 4-bolt flange
Shaft power: 24 HP at 500 RPM, 48 HP at 1000 RPM
Kit-style assembly with internal parts common to the Chelsea 442 Series for easier serviceability
Tech Specs
- Product Series: 489
- Mounting Type: 8-Bolt Direct Mount
- Mounting Option: Standard Mount (X)
- Gear Ratio Code: L (25/34)
- Input Gear Designator: AH
- Lube Option: No Pressure Lube (X)
- Shift Option: Cable (Wire) Shift (W)
- Assembly Arrangement: 3
- Output Option: SAE B 2 or 4-Bolt Flange, SAE B Shaft (7/8" 13T) (XK)
- 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 (500 RPM), 48 HP (1000 RPM)
- Transmission Compatibility: Eaton/Fuller, Volvo/Mack, Tremec, Other Manual Transmissions with 8-Bolt Opening
- DIMENSIONS (H x W x L): 8.38" x 10.38" x 14.25"
Additional Information

The Chelsea 489 Series PTO is suited for aerial, vocational, and municipal equipment applications including utility trucks, snow and ice removal, fire and rescue, and dump truck service. The 489 Series features tapered bearings rather than needle bearings for increased load-bearing capability. Twenty-seven output options are available across the series, including Chelsea's 360-degree rotatable flange with greaseable shaft to help reduce pump shaft spline fretting and corrosion. Eleven internal speed ratios and shift configurations are offered within the series. For detailed parts information, refer to Chelsea 489 Series Parts List HY25-2442-M1_US and Service Manual HY25-6489-M1/US.
