Enthusiast Gauges Home | VDO Instruments and Accessories Welcome to the VDO catalog for auto enthusiast gauges and accessories. Since 1920, we’ve been focused on providing our customers with the best possible instrumentation. We continue to work to deliver the functionality, durability and high quality finish that have earned our Gauge Kits · Contact Us · VDO Marine · Speedometer · By Series · Fuel Level Sender[PDF] Tachometer Installation and before cutting any holes VDO Tachometer is not included. This sensor is avail-able from your auto parts dealer. (Part numbers forhe t VDO Generator Sensor is Part #340 001.VDO’s Inductive Sensor is Part #340 020.) 1. Refer to Diagram B for dimensions. The 3¹⁄₈" (80 mm) tachometer requires a hole diameter of 3¹⁄₈" VDO Gauges Tachometer Gauges - Free Shipping on Orders Find VDO Gauges Tachometer Gauges and get Free Shipping on Orders Over $99 at Summit Racing!