85mm Tachometer with LCD Hour Meter | 7 Color LED Backlight for Marine Boat Car

This 85mm tachometer combines a clear LCD hour meter with a seven-color LED backlight, giving you a precise readout of your engine's RPM and total running hours. It is built for marine, automotive, and diesel generator applications where reliable monitoring matters.

You can switch between seven backlight colors to match your dashboard or personal preference. The display shows both current RPM and accumulated engine hours up to 99,999.9 hours, so you always know when maintenance is due. The gauge is protected by an IP67 waterproof and dustproof rating, making it suitable for damp or dusty environments.

Installation is straightforward thanks to the multi-plug socket connection. The 316 stainless steel bezel and curved anti-fog glass add durability and prevent condensation from obscuring the display. This tachometer works with 4-cylinder gasoline and diesel engines found in cars, trucks, boats, and generators.

Key Features and Benefits

- Seven-color LED backlight lets you customize the look to match your dashboard or mood

• LCD hour meter tracks engine run time up to 99,999.9 hours for easy maintenance scheduling

• IP67 waterproof and dustproof rating protects the gauge in marine and outdoor conditions

• 316 stainless steel bezel with curved anti-fog glass resists corrosion and prevents fogging

• Multi-plug socket connection simplifies wiring and installation

• Works with 4-cylinder engines in cars, trucks, boats, and diesel generators

Who Is This For

- Boat owners who need a waterproof tachometer with hour tracking for outboard or inboard engines

• Car and truck enthusiasts upgrading their dashboard with a modern, color-adjustable RPM gauge

• Diesel generator operators who rely on accurate RPM and engine hour readings for scheduled service

Usage Scenario

Mike runs a small fishing charter and his old tachometer failed mid-season. He installed this 85mm gauge on his center console. The seven-color backlight lets him choose a soft blue for night trips, while the hour meter reminds him exactly when the outboard needs an oil change. The IP67 seal keeps rain and spray out, and the anti-fog glass stays clear even on humid mornings.

Micro Comparison

Unlike basic tachometers that only show RPM with a single backlight color, this gauge adds a built-in LCD hour meter and seven selectable colors. The IP67 waterproof rating and anti-fog curved glass make it more durable than standard automotive tachometers in wet or humid environments. The 316 stainless steel bezel also resists corrosion better than painted or chrome finishes.

Specifications

- Size: 85mm diameter

• Material: Stainless steel and glass

• Number of cylinders supported: 4

• Working voltage: 9-32 VDC

• Working current: less than 120 mA

• Backlight: 7 colors (red, yellow, orange, green, blue, purple, white)

• Engine hour range: 0.0 to 99,999.9 hours

• Working temperature: -30 to 70°C / -22 to 158°F

• Storage temperature: -40 to 85°C / -40 to 185°F

• Waterproof and dustproof grade: IP67

• Signal type: Pulse

• Indicating ranges available: 0-3000, 0-4000, 0-6000, 0-7000, 0-8000 RPM

Package Includes

- 1 x Boat Tachometer

• 1 x Cable

• 1 x Installation guide

• Or 1 x RPM Sensor (depending on variant)

Why You Will Love It

You can finally match your gauge lighting to the rest of your dashboard with a simple button press. The built-in hour meter removes the guesswork from engine maintenance schedules. And the rugged waterproof design means you can trust this tachometer on the water, on the road, or at the job site.

Questions and Answers

Question: Can this tachometer be used on a 2-cylinder engine?

Answer: This gauge is designed for 4-cylinder engines only. It may not read correctly on 2-cylinder or 6-cylinder engines.

Question: How do I change the backlight color?

Answer: You can cycle through the seven colors (red, yellow, orange, green, blue, purple, white) using a button on the gauge or the included wiring.

Question: Is the hour meter resettable?

Answer: The hour meter accumulates total engine run time and is not resettable by the user. It helps track overall engine usage.

Question: Does this gauge work with a 12V or 24V system?

Answer: Yes, it operates on 9-32 VDC, so it works with both 12V and 24V electrical systems found in cars, trucks, and boats.

Question: What does the IP67 rating mean for installation?

Answer: IP67 means the gauge is fully protected against dust and can be submerged in up to 1 meter of water for 30 minutes. It is safe for exposed marine installations.

Question: Can I install this on a diesel generator?

Answer: Yes, the gauge works with 4-cylinder gasoline and diesel engines, including diesel generators, as long as the engine produces a pulse signal.