2" 52mm Tachometer Gauge | Red Backlight RPM Meter for Car Boat Marine 12V 24V

Monitor your engine's performance with a precise and durable 52mm tachometer. This gauge provides accurate RPM readings for your car, boat, or marine engine, featuring a bright red backlight for clear visibility in any condition. It is built to withstand harsh environments with an IP67 waterproof rating.

This tachometer is designed for universal fitment on 12V and 24V systems, making it a versatile choice for gasoline and diesel engines. The gauge offers multiple indicating ranges to suit different engine types, from 0-3000 RPM up to 0-8000 RPM. Its classic racing look adds a professional touch to your dashboard.

Installation is straightforward with the included manual. The gauge connects easily to your tacho sensor, engine, alternator, ignition coil, or crankshaft signal. The adjustable speed ratio (1-300) allows for precise calibration to match your specific vehicle or boat setup.

Built from stainless steel and nickel-plated plastic, this tachometer is made to last. The red backlight ensures your RPM data is easy to read at night or in low-light conditions. Whether you are upgrading your dashboard or replacing a faulty gauge, this tachometer delivers reliable performance.

Key Features and Benefits

- High precision measurement that provides accurate RPM readings for optimal engine monitoring.

• Red backlight that ensures clear visibility in low-light or nighttime driving conditions.

• IP67 waterproof protection that allows the gauge to withstand water exposure, even at 1 meter depth.

• Adjustable speed ratio from 1-300 that lets you calibrate the gauge for different engines and signals.

• Wide operating voltage of 9-32V DC that works with both 12V and 24V electrical systems.

• Stainless steel and nickel-plated plastic construction that offers durability and a sleek racing look.

Who Is This For

- Car and truck owners who want a reliable and accurate RPM gauge for their dashboard.

• Boat and marine enthusiasts needing a waterproof tachometer for harsh marine environments.

• Diesel generator and engine operators who require precise RPM monitoring for maintenance.

• DIY mechanics and custom builders upgrading their vehicle's instrumentation for better performance tracking.

Usage Scenario

Mark had just finished rebuilding the engine on his classic fishing boat. The old tachometer was unreliable and fogged up in the salt air. He installed this 52mm waterproof gauge, connected it to the alternator signal, and calibrated the speed ratio. Now he can see his exact RPM at a glance, even when running at full throttle in choppy water. The red backlight is easy on his eyes during early morning trips, and the gauge stays dry inside no matter how much spray hits the dash.

Micro Comparison

Many basic tachometers offer limited RPM ranges or lack waterproofing. This gauge provides multiple indicating ranges from 3000 to 8000 RPM, so you can select the right scale for your engine. Its IP67 rating means it can handle water exposure that would damage standard gauges, making it a more reliable choice for both marine and off-road applications.

Specifications

Material: Plastic + Stainless steel

Size: 52 mm / 2.0 in (diameter)

Weight: 300 g / 10.6 oz

Backlight Color: Red

Operating Voltage: 9-32V DC (12V / 24V systems)

Indicating Range: 0-3000 RPM, 0-4000 RPM, 0-6000 RPM, 0-7000 RPM, 0-8000 RPM

Protection Class: IP67

Adjustable Speed Ratio: 1-300

Number of Cylinders: 4

Placement on Vehicle: Front

Connection: Red (Battery +9-32V DC), Blue (Battery -), Black (Signal), Orange (Backlight +9-32V DC)

Input Signal: Pulse signal from tacho sensor, engine, alternator, ignition coil, crankshaft sensor

Please allow 1-3 cm / 0.4-1.2 in difference due to manual measurement.

Package Includes

- 1x Tachometer

• 1x Installation Instruction

Why You Will Love It

You will love the confidence that comes from knowing your exact engine RPM at all times. The durable, waterproof design means this gauge will keep working through rain, spray, and tough conditions. Its classic racing style and bright red backlight will make your dashboard look professional and perform better.

Questions and Answers

Question: Is this tachometer compatible with a 12V diesel engine?

Answer: Yes, it works with both 12V and 24V systems and is suitable for diesel engines.

Question: Can I use this gauge on a 4-cylinder engine?

Answer: Yes, this tachometer is designed for 4-cylinder engines.

Question: How do I calibrate the speed ratio?

Answer: The gauge has an adjustable speed ratio from 1-300. You can set it according to your engine's specifications using the included instructions.

Question: Is this gauge waterproof for marine use?

Answer: Yes, it has an IP67 protection class and can work underwater at 1 meter depth, making it suitable for boats.

Question: What signal source does this tachometer connect to?

Answer: It accepts a pulse signal from a tacho sensor, engine, alternator, ignition coil, or crankshaft sensor.