489 Series

The Chelsea 489 Series Power Take-Off (PTO) is engineered specifically for manual transmission applications, with a focus on reducing installation time and minimizing potential leak points. Its one-piece cast iron housing mounts directly to standard 8-bolt transmission openings, offering the same torque capacity as the 442 Series at up to 250 lb-ft while improving overall installation efficiency. Designed for durability under load, the 489 Series uses robust tapered bearings in place of needle bearings, providing enhanced load-carrying capability and long-term reliability in demanding vocational use. This versatile PTO offers 27 output configurations, including Chelsea’s 360-degree rotatable flange with a greaseable shaft designed to help reduce spline fretting and corrosion on pump connections. It also features 11 internal speed ratios and multiple shift options to accommodate a wide range of equipment requirements. The Chelsea 489 Mechanical Shift PTO is compatible with many popular manual transmissions, including Eaton Endurant, Mack, Tremec, and others, making it a flexible solution for diverse vocational truck applications.