The Chelsea 489 Series Power Take-Off, part number 489XHAHX-P5AF or 489XHAHXP5AF, is a 12V electric/air shift PTO designed for most manual transmissions carrying an 8-bolt PTO aperture, including Eaton Fuller, Eaton Endurant, Mack, and Tremec gearboxes. The integral 8-bolt cast iron housing bolts directly to the transmission opening without an adapter plate, eliminating that potential leak path. Tapered bearings replace the needle bearings found on some competing designs, providing greater load-bearing capability. Output is through an SAE B 2 or 4-bolt flange with a 1" 15-tooth SAE BB shaft. The 489 Series carries the same torque capacity as the Chelsea 442 Series at 250 lb-ft, with intermittent torque ratings from 201 to 300 lb-ft. Output shaft and internal parts are common to the 442 Series, which simplifies service. Call us to confirm proper fit for your specific transmission and application.
Features
8-bolt integral cast iron housing mounts directly to the transmission opening, no adapter plate required
12V electric/air shift operation
SAE B 2 or 4-bolt flange with a 1" 15-tooth SAE BB shaft
Tapered bearings for greater load capacity compared to needle bearing designs
Intermittent torque rating: 201 to 300 lb-ft (301 to 400 Nm)
Internal parts common to Chelsea 442 Series for easier service and parts interchange
Tech Specs
- Mounting Type: 8-Bolt
- Mounting Option: Standard Mount (X)
- Gear Ratio Code: H (23/35)
- Input Gear Designator: AH
- Lube Option: No Pressure Lube (X)
- Shift Option: 12V DC Electric/Air Shift (P)
- Assembly Arrangement: 5
- Output Option: SAE B 2 or 4-Bolt Flange, SAE BB Shaft (1" 15T) (AF)
- Intermittent Torque: 201 to 300 lb-ft (301 to 400 Nm)
- Output Power: 46 to 55 HP (31 to 40 kW)
- Shaft Power: 24 HP at 500 RPM, 48 HP at 1000 RPM
- Housing: One-piece cast iron
- Bearing Type: Tapered bearings
- Product Series: 489
- Compatible Transmissions: Eaton Fuller, Eaton Endurant, Mack, Tremec (8-bolt aperture)
Additional Information
Parts manual and diagrams: Chelsea 489 Series PTO parts list with prices
Equivalent PTOs:
Matched by full model number. Check the mounting, input gear and output against the unit you are replacing before you order. Look up any Chelsea, Muncie or Bezares number on our Muncie to Chelsea PTO cross reference.

