6Y5-8350T-D1-00 - TACHOMETER ASSY supercedes 6Y5-8350T-D0-00. Accurate information is available to let you fine tune settings to achieve the best overall efficiency and performance for operating conditions. Designed for optimum visibility and long-term durability. This tachometer displays the following engine information:. Engine RPM. Trim Angle. Oil Level. Warning Lamps. Overheat Warning Lamp. Hour Meter For Trip. Total Operating Hours