The Chelsea 489 Series Power Take-Off, part number 489GFAHX-W3GK or 489GFAHXW3GK, is an 8-bolt PTO assembly designed for manual transmissions including Eaton Fuller, Volvo/Mack, and Tremec applications. The one-piece cast iron housing bolts directly to the 8-bolt transmission opening, eliminating the need for an adapter plate and reducing potential leak paths. The 489 Series delivers the same 250 lb-ft intermittent torque capacity as the 442 Series, with shift actuation via wire/cable mechanical linkage. Output is a 1-1/4" round shaft (with key), and shaft power is rated at 24 HP at 500 RPM and 48 HP at 1,000 RPM. Tapered bearings replace needle bearings for improved load handling. Call us to confirm proper fit for your transmission.
Features
8-bolt one-piece cast iron housing bolts directly to transmission opening, no adapter plate needed
Wire/cable mechanical shift actuation
1-1/4" round output shaft with key
250 lb-ft intermittent torque capacity; 24 HP at 500 RPM, 48 HP at 1,000 RPM
Tapered bearings for greater load-bearing capability over needle-bearing designs
Internal parts common to the Chelsea 442 Series, simplifying service and parts sourcing
Kit-style construction and greaseable output options support in-field serviceability
Tech Specs
- PRODUCT SERIES: 489
- MOUNTING TYPE: 8-Bolt (one-piece cast iron housing, no adapter plate required)
- SHIFT TYPE: Wire/Cable Mechanical
- OUTPUT SHAFT TYPE: 1-1/4" Round with key
- INTERMITTENT TORQUE: 250 lb-ft (339 Nm) - Check Application Pages for Actual Torque Ratings
- OUTPUT POWER: 46-55 HP (31-40 kW)
- SHAFT POWER: 24 HP (18 kW) at 500 RPM; 48 HP (36 kW) at 1,000 RPM
- TRANSMISSION COMPATIBILITY: Eaton/Fuller, Volvo/Mack, and other manual transmissions with 8-bolt PTO aperture
- LUBRICANT: X = No Pressure Lube; P = Pressure Lube (suffix-dependent)
Additional Information
Parts Manual: Chelsea 489 Series PTO Parts Manual (PDF) - exploded views, item numbers and the full parts breakdown for this series.
