Auto Meter Prestige Black Diamond 3 3/8″ Tachometer (0-8000 RPM) Since 1957, AutoMeter has set the standard in performance, accuracy and durability with their legendary Tachometers. The absolute pinnacle of engineering and technology, its no wonder AutoMeter can lay claim to more motorsports victories than every other gauge manufacturer combined. The patented air core meter movement, wound in house to exacting standards, can move the needle from 0 – 10,000 rpm in 333 milliseconds. An inaugural inductee to the Hot Rod Speed Parts Hall of Fame, no other tachometer on the market has had anything approaching its impact on professional racing. Built for a lifetime of service under the harshest conditions, this is the no compromise tach for no compromise builds. When youre ready for the best, there isnt another choice. Features Modern white LED through-the-dial lighting provides clear visibility during nighttime use Compatible with 1 – 4 pulse ignition signals (2-8 cylinder engines) with points, electronic, and most 12V high-performance racing ignitions. 12 and 16 volt compatible, well-suited with nearly every street car or race car electrical system AutoMeters race proven air-core electric tachometers provide quick and accurate readings with a needle so responsive it can go from 0 – full scale in 333 milliseconds Gauge kit includes mounting hardware and detailed instructions for installation Applications Universal What’s In The Box 3-3/8″ Tachometer Mounting Bracket