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Replacement magnets for FAST driveshaft speed sensor kits restore the magnetic elements used to measure driveshaft RPM for traction control and speed calculations. In the full sensor kit, two magnets fit a collar around the pinion yoke and, when passed by the pickup, provide accurate driveshaft speed and acceleration signals to the XFI unit for improved traction control, MPH readout and optional MPG calculations when tire size is entered; these magnets replace parts for FAST items 301436 and 301437.
FAST Replacement Magnet Kit
