The Chelsea 489 Series Power Take-Off Assembly, part number 489XHAHX-W5XK or 489XHAHXW5XK, mounts directly to an 8-bolt transmission opening on most manual transmissions including Eaton Fuller, Volvo/Mack, and Tremec. Its one-piece cast iron housing eliminates the adapter plate found on earlier designs, reducing potential leak paths and cutting installation time. The series delivers 250 lb-ft intermittent torque, matching the capacity of the Chelsea 442 Series. Output is an SAE B 2 or 4-bolt flange with a 7/8" 13-tooth SAE B shaft, and shift is wire/cable mechanical. Shaft power runs 24 HP at 500 RPM and 48 HP at 1,000 RPM. Internal parts share commonality with the 442 Series, keeping rebuild inventory straightforward. Call us to confirm proper fit for your transmission and application.
Features
8-bolt one-piece cast iron housing bolts directly to the transmission opening, eliminating the adapter plate and reducing leak paths
Wire/cable mechanical shift; electric-over-air shift option also available in the 489 Series
250 lb-ft intermittent torque capacity, equal to the Chelsea 442 Series
SAE B 2 or 4-bolt flange with a 7/8" 13-tooth SAE B shaft
Internal parts share commonality with the 442 Series, simplifying service and parts inventory
Kit-style PTO design makes in-field service straightforward
Tech Specs
- Product Series: 489
- Mounting Type: 8-Bolt (direct mount, no adapter plate required)
- Mounting Option: Standard Mount (X)
- Gear Ratio Code: H (23/35)
- Input Gear Designator: AH
- Lube Option: No Pressure Lube (X)
- Shift Option: Cable (Wire) Shift (W)
- Assembly Arrangement: 5
- Output Option: SAE B 2 or 4-Bolt Flange, SAE B Shaft (7/8" 13T) (XK)
- Intermittent Torque: 250 lb-ft / 339 Nm (check application pages for actual torque ratings)
- Continuous Torque: De-rate intermittent rating by 30% (check application pages for actual torque ratings)
- Output Power: 46-55 HP / 31-40 kW
- Shaft Power: 24 HP (500 RPM), 48 HP (1,000 RPM) / 18 kW (500 RPM), 36 kW (1,000 RPM)
- Transmission Compatibility: Eaton/Fuller, Volvo/Mack, Tremec, and other manual transmissions with 8-bolt PTO aperture
Additional Information
Parts manual and diagrams: Chelsea 489 Series PTO parts list with prices
