AutoMeter atm3991 Sport-Comp 3-3/8-Inch 8,000 RPM Electronic In-Dash Tachometer

Since 1957, AutoMeter has set the standard in performance, accuracy and durability with their legendary Tachometers. The absolute pinnacle of engineering and technology, it’s 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 you’re ready for the best, there isn’t another choice. GAUGE, TACHOMETER, 3 3/8", 8K RPM, IN-DASH, SPORT-COMP Electronic Modules

• AutoMeter’s 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
• Compatible with most 4, 6, and 8 cylinder engines (2 - 4 pulse per revolution ignition signals) with points, electronic, and most 12V high-performance racing ignitions.
• Gauge kit includes bulb and socket assembly, red and green bulb covers, mounting hardware, and detailed instructions for installation
• 12 and 16 volt compatible, well-suited with nearly every street car or race car electrical system
• Traditional incandescent lighting illuminates around the perimeter of the dial

The AutoMeter Sport-Comp electronic in-dash tachometer combines race-proven performance with quick, accurate engine-speed readings. Its patented air-core electric movement delivers highly responsive needle movement, reaching full scale in 333 milliseconds. The tachometer is designed for use with most 4-, 6-, and 8-cylinder engines using 2- to 4-pulse-per-revolution ignition signals, including points, electronic, and most 12-volt high-performance racing ignitions.

Key Features & Performance Benefits

• Race-proven air-core electric movement provides fast, accurate RPM readings.
• 8,000 RPM full-scale range supports performance and racing applications.
• Compatible with most 4-, 6-, and 8-cylinder engines and specified ignition systems.
• 12- and 16-volt compatibility suits nearly every street-car or race-car electrical system.

Key Product Specifications & Technical Data

• Brand: AutoMeter
• Part Number: atm3991
• Series: Sport-Comp
• Gauge Type: Electronic tachometer
• Mounting Style: In-dash
• Gauge Size: 3-3/8 inches
• RPM Range: 0–8,000 RPM
• Lighting: Traditional incandescent lighting around the dial perimeter

What's Included

The gauge kit includes a bulb and socket assembly, red and green bulb covers, mounting hardware, and detailed installation instructions. Fitment data is available for most 4-, 6-, and 8-cylinder engines with compatible ignition signals as specified above.

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: t
Units Per Sku: 1