The Eaton Fuller Speedo Rotor, part number 20189 (also cross-referenced as HF20189), is a manual transmission component used in Eaton Fuller drivetrain applications. The speedo rotor works within the transmission to provide the signal source for speedometer readings, making accurate replacement critical to proper instrument function. Sold individually, this is a genuine Eaton Fuller part available from Pro Gear and Transmission. Not sure this is the right rotor for your transmission? Give us a call and we can help confirm the correct fitment before you order.FeaturesGenuine Eaton Fuller part number 20189Also referenced as HF20189Speedo rotor for Eaton Fuller manual transmission applicationsProvides signal source for speedometer function within the transmissionSold as an individual unitTech SpecsPart Number: 20189Cross-Reference: HF20189Unit of Measure: EachNMFC Code: 121875-70 – Miscellaneous Truck Parts, including Transmission/Clutch Parts, Gears, Pumps