Custom Car Modifications Gauge Supplier & Factory

Precision Telemetry Systems & Embedded Automotive Gauges for Professional Motorsport and Performance Applications

Premium Automotive Instrument Lineup

Engineered to Deliver Real-Time High-Accuracy Telemetry Diagnostics under Extreme Operating Conditions

Wholesale 2 Inches 52mm Car Gauge Water Temp Oil Temp Voltmeter Oil Press BAR/PSI Vacuum Boost Gauge Air Fuel Ratio EGT Gauge Manufacturers

Wholesale 2 Inches 52mm Car Gauge Water Temp Oil Temp Voltmeter Oil Press BAR/PSI Vacuum Boost Gauge Air Fuel Ratio EGT Gauge Manufacturers, Factories

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Custom 3.5 Inch Multifunctional LCD Racing Gauge from China Suppliers

Custom 3.5 Inch Multifunctional LCD Racing Gauge from China Suppliers - Accurate Racing Parameters with Sensor Kit from Factory Factories, Factory

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Wholesale 60mm Car Gauge Set: Tachometer, Voltmeter, Oil Pressure, Water Temp, Boost Gauge

Wholesale 60mm Car Gauge Set: Tachometer, Voltmeter, Oil Pressure, Water Temp, Boost Gauge - China Suppliers Factory Quality Manufacturers, Factory

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Wholesale 52mm Water Temp Oil Pressure Voltmeter Triple Gauge Kit

Wholesale 52mm Water Temp ℃ Oil Pressure Bar Voltmeter 52mm 3 in 1 Triple Gauge Kit With Temp&Pressure Sensor 2010 Manufacturer, Factories

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Custom 52mm Digital Dual Gauge Water Temperature and Voltage Meter

Custom 52mm Digital Dual Gauge Water Temperature and Voltage Meter for 12V/24V Cars - China Suppliers & Factory Quality Factories, Factory

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Wholesale China Suppliers Factory SincoTech DO908 9 in 1 LCD Gauge Sensor Kit

Wholesale China Suppliers Factory SincoTech DO908 9 in 1 LCD Gauge Sensor Kit Waterproof Rally Car Race Dashboard Factories, Factory

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Wholesale 52mm Car Gauge Set - Boost, Water Temp, Oil Temp, Oil Press, EGT, Tachometer

Wholesale 52mm Car Gauge Set - Boost, Water Temp, Oil Temp, Oil Press, EGT, Tachometer - China Suppliers Factory Offers Suppliers, Factories

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Wholesale 3.5 Inch Race Dashboard Multifunctional LCD Racing Gauge with Sensor Kit

Wholesale 3.5 Inch Race Dashboard Multifunctional LCD Racing Gauge with Sensor Kit SincoTech DO916 Manufacturer, Supplier

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Ruian DongOu Automobile Meter Factory Operations

The Evolution of Cockpit Performance Telemetry

In high-performance automotive tuning, racing, and fleet tracking, the instrumentation system acts as the absolute nervous system of the vehicle. Modern internal combustion engines (ICE) and hybrid power systems run on tight tolerances. A deviation of just 0.5 Bar in oil pressure or a sudden rise of 10°C in coolant temperature can result in total mechanical failure.

Ruian DongOu Automobile Meter Factory, established in 1986, is at the forefront of automotive display technology. By designing and manufacturing custom automotive gauges, we bridge the gap between standard OBD-II readouts and the physical micro-variations occurring in the engine block. Our dual-brand engineering structure covers both advanced racing telemetry (SincoTech) and precision modification units (GragonGauge), supplying specialized instrumentation solutions to the worldwide automotive marketplace.

38+ Years of OEM R&D
2 Brands SincoTech & GragonGauge
100% Quality Checked Calibration
50+ Countries Supplied

Global Commercial & Industrial Landscape

Key Trends Shaping the Future of Customized Vehicle Telemetry Systems

CAN-Bus Protocol Integration

Traditional mechanical pressure tubes are being replaced by robust electronic sensors. By using controller area network (CAN-bus) protocols and high-speed microcontrollers, our multi-function LCD displays integrate over 9 core engine parameters through a single high-speed connection, reducing wire complexity and layout space behind the cluster.

OLED & Transflective Displays

Professional drivers face variable light situations—from glaring midday sun to pitch-black night rallies. We utilize anti-glare high-contrast transflective LCD panels and self-illuminating OLED displays that adjust dynamically, ensuring critical warning lights and shift alerts remain visible in all lighting situations.

Multi-Voltage & EV Capabilities

With the transition of utility, industrial, and passenger vehicles to high-voltage electric platforms, modern modification gauges must handle wider electrical ranges. Our digital dual gauges are optimized for both 12V and 24V DC systems, providing precise diagnostic coverage for custom conversions, trucks, and specialized equipment.

Ruian DongOu Automobile Meter Factory: Since 1986

Established over three decades ago, our R&D facility in Ruian, Wenzhou, features precision manufacturing setups and advanced calibration labs. Over the past 38 years, our engineering team has developed and refined stable production systems to manufacture analog, hybrid digital, and multi-function LCD displays that reliably endure continuous thermal stress and vehicle vibration.

Our specialized product lineup is structured into two main brands to address distinct market requirements:

  • SincoTech: Engineered in collaboration with Australian motorsport designers. This brand features advanced waterproof race dashboards, high-brightness OLED telemetry screens, and Bluetooth sensor hubs designed for professional motorsport and rally vehicles.
  • GragonGauge: Dedicated to versatile performance modifications. GragonGauge manufactures standard 52mm (2 inch), 60mm (2.36 inch), and 85mm (3.75 inch) aftermarket gauges including boost, oil pressure, vacuum, water temperature, exhaust gas temp (EGT), and tachometers.

Technical Architecture & Engineering Specifications

An Inside Look at the Advanced Sensor Arrays and Micro-Stepper Internals

NTC & Piezoresistive Transducers

We supply high-stability NTC thermistors for water and oil temperature systems alongside solid-state piezoresistive pressure sensors. These units yield microvolt variances mapped to temperature curves, mitigating drift to retain measuring precision across a -40°C to +150°C operational span.

Ultra-Quiet Stepper Motors

For traditional analog style gauge lines, our designs utilize high-frequency micro-stepper motors that translate sensor readings into smooth dial movements. These components are engineered for racing conditions, eliminating pointer flutter and lag during rapid acceleration and high-g cornering.

Comprehensive OEM/ODM Customization

We supply tailored customization options for international distributors, performance tuners, and vehicle builders. This service supports customized dial graphics, warning parameters, display colors, mounting brackets, and custom logo screen branding.

Our Advanced Manufacturing and Testing Infrastructure

We deploy robust machinery and testing processes to manufacture long-lasting instrument systems

Industry Applications & Performance Environments

Tailored telemetry solutions for diverse vehicle platforms and operational conditions

Various Gauges Can Be Freely Combined

Custom Modular Cockpit Instrumentation

Drivers can group and combine individual gauges to monitor specific vehicle systems, ensuring layout flexibility in track, street, or marine environments.

Dashboard Integrates Multiple Core Vehicle Parameters

Multi-Function Performance Dashboards

Our integrated racing dash systems display up to 18 critical parameters in a single, high-contrast LCD screen, providing professional teams with immediate diagnostics.

Can Be Installed in Any Location According to Preference

Flexible Mounting & Integration

Our instruments support diverse configurations, including A-pillar pods, dashboard mounts, and embedded steering column setups, matching any vehicle cockpit styling.

Frequently Asked Questions

Insights into custom automotive instrumentation engineering and sourcing

What options do you offer for custom gauges?
We provide full OEM/ODM manufacturing customization. Clients can customize the gauge dial design, screen logo animations, backlight color options (including 7-color switchable displays), sensor calibration scaling, unit measurements (BAR vs. PSI, Celsius vs. Fahrenheit), and choose between analog stepper-motor or full-digital LCD layouts.
How do SincoTech and GragonGauge differ?
SincoTech specializes in high-end, waterproof LCD and OLED motorsport dashboard systems (such as the DO908 and DO928 series) featuring multi-parameter sensor modules, warning thresholds, and Bluetooth data hubs. GragonGauge focuses on individual 52mm and 60mm mechanical and digital-analogue instruments (boost, water temp, oil press, EGT) geared towards performance street cars, off-road builds, and classic restomods.
Are your sensor kits compatible with 24V commercial electrical systems?
Yes, many of our digital instruments are designed with multi-voltage inputs (12V/24V auto-detection). This design ensures compatibility across passenger cars, commercial transport vehicles, heavy-duty machinery, and custom marine setups.
How do you guarantee measurement accuracy in harsh racing environments?
Our manufacturing facility utilizes advanced calibration systems and environmental chambers to test sensors under extreme temperature changes (-40°C to +150°C) and continuous vibration. We construct our gauges with durable, vibration-resistant PCBs, water-resistant connectors, and premium internal components to prevent pointer flutter and drift under high-vibration racing conditions.
What is the typical minimum order quantity (MOQ) for custom factory orders?
For wholesale orders of standard products under our GragonGauge or SincoTech brands, we support low MOQs to help distributors. For custom OEM designs requiring unique dial face printing, custom firmware adjustments, or new sensor calibration configurations, the MOQ varies depending on the technical modifications. Please contact our sales team with your exact project details for a custom quote.

Professional Motorsports & Specialty Dash Panels

High-Density LCD Panels and Integrated Warning Display Modules

Wholesale Racing Gauge 9 in 1 Dash Panel SincoTech DO928

Wholesale China Racing Gauge 9 in 1 Race Dash Panel | Multi-Function Dashboard from Suppliers & Factory - SincoTech DO928 Manufacturer, Factory

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Custom 5 Inch 4 in 1 Car Tachometer with Shift Light Sensors

Custom 5 Inch 4 IN 1 Car Tachometer with Shift Light & Sensors - China Suppliers Factory for Water Temp, Oil Temp, Oil Pressure Suppliers, Supplier

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Custom 52mm Dual Display Tachometer Boost Gauge

Custom 52mm Car Gauge Dual Display Tachometer & Boost Gauge - EGT, Water Temp, Oil Temp, Oil Pressure - China Suppliers & Factory Manufacturer, Supplier

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Wholesale 3.5 Inch LCD Racing Gauge Sensor Kit

Wholesale 3.5 Inch LCD Racing Gauge with Sensor Kit - Multifunctional Dashboard by China Suppliers & Factory Supplier, Factories

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Custom Race Dash Panel Sensor Kit SincoTech DO926NB

Custom Race Dash Panel Multi-Function Dashboard with Sensor Kit - China Factory Suppliers SincoTech DO926NB Manufacturers, Supplier

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Wholesale 60mm Car Gauge Set: Tachometer, Voltmeter, Oil Press, Water Temp & Boost Gauge

Wholesale 60mm Car Gauge Set: Tachometer, Voltmeter, Oil Press, Water Temp & Boost Gauge from China Supplier Factory Suppliers, Supplier

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Custom Rally Race Dash Panels Bluetooth LCD Race Dashboard Kit

Custom Rally Race Dash Panels 9 in 1 Gauge Bluetooth LCD Race Dashboard Sensor Kit SincoTech DO904 Manufacturers, Factories

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Custom China Racing Gauge 9 in 1 Race Dash Panel

Custom China Racing Gauge 9 in 1 Race Dash Panel - Multi-Function Dashboard from Reliable Suppliers & Factory Suppliers, Factory

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