Wholesale Clusters Car Manufacturers & Suppliers

Precision Automotive Gauges, Bluetooth Racing Dashboards & Custom Instrument Clusters from a Trustworthy 38-Year Chinese Factory Partner

Product Division I

Hot Performance Dashboard Modules

Explore our high-demand automotive gauges and racing dash panels configured for dynamic tracking and high precision.

Wholesale 80mm Tachometer

Wholesale 80mm Tachometer 0-11000RPM with 7 Colors Backlight

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Custom Racing Dash Panel

Custom Racing Dash Panel Multi-Function Wideband LCD Dashboard

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Wholesale Race Dash Panels

Wholesale 10 in 1 Race Dash Panels OLED Display by China Suppliers

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Custom Narrowband Race Dash Panel

Custom Multi-Function Narrowband Race Dash Panel with Sensor Kit

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Wholesale 2 Inch Car Gauge Set

Wholesale 2 Inch 52mm Car Gauge Set: Water/Oil Temp, Voltmeter, Oil Pressure

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Wholesale 80mm RPM Tachometer

Wholesale 80mm RPM Tachometer 0-11000RPM with 7 Colors Backlight

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DO909 Racing Dash Gauge

Custom DO909 Racing Dash Gauge Colorful LCD Touchscreen

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Custom 5 Inch Car Tachometer

Custom 5 Inch 4 IN 1 Car Tachometer & Sensors - China Factory

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Heritage & Authority

About Ruian DongOu Automobile Meter Factory

Established in 1986, Ruian DongOu Automobile Meter Factory is a pioneer and professional enterprise dedicated to the research, development, and high-fidelity production of automotive instrumentation and cluster systems. Over nearly four decades of operation, our organization has cultivated deep engineering expertise, establishing a mature, vertically integrated production ecosystem designed to fulfill the complex demands of the worldwide automotive market.

We pride ourselves on manufacturing stable, high-accuracy instruments that empower automotive builders, distributors, and custom vehicle workshops. Our multi-tiered research framework ensures that every gauge—from classic mechanical indicators to modern LCD OBDII telematics consoles—is manufactured to meet strict international standards.

Strategic Brand Ecosystem

Our operation controls two globally recognized brands: SincoTech, co-developed with an Australian automotive performance specialist to engineer high-end motorsport-grade telemetry, and GragonGauge, focusing on modified aftermarket instruments (boost, water temp, exhaust gas temp, voltmeters, and tachometers in 52mm, 60mm, and 85mm configurations).

Ruian DongOu Factory Office
DongOu Workshop Tech
Precision Cluster Calibrator
Quality Control Inspection
Engineering Deep Dive

Technological Architecture of Modern Dash Clusters

Addressing semantic shift: From simple micro-switches to unified high-speed microcontrollers driving CAN-bus integrated automotive dashboards.

CAN Bus & OBDII Integration

Modern performance vehicles process millions of data packets per second. Our SincoTech series operates on a custom-designed, fast-polling processor that links directly to a vehicle's standard OBDII interface or direct CAN network. This cuts down latency to near-zero milliseconds, guaranteeing that critical data like RPM, air-fuel ratio, and engine boost are presented to the operator in real-time without buffering.

Premium Display Engineering

To withstand direct sunlight and aggressive open-cockpit driving conditions, our dashboards feature high-brightness OLED and TFT LCD displays. With intelligent auto-dimming sensors, specialized anti-glare filters, and 7-color customizable backlighting, drivers receive crystal clear readouts in any condition—from night racing to desert rallies.

Wideband Sensor Calibrations

A vehicle monitor is only as reliable as the sensor feeding it. Ruian DongOu designs and imports highly accurate, temperature-compensated digital transducers. Our air-fuel ratio systems utilize industry-leading wideband oxygen sensors (such as DO926WB kits) that read microscopic changes in exhaust chemical composition for real-time ECU tuning.

38+
Years Industry Experience
120+
Global Export Destinations
50+
Custom Patent Designs
0-11k
RPM Precision Measurement
Practical Applications

Localized Application Scenarios

How our product lines adapt to different market realities, environments, and custom car sectors globally.

Various Gauges Combinations

Custom Professional Motorsports

On racing tracks from Australia to North America, drivers face extreme heat and G-forces. The SincoTech racing dashboards integrate 10 core sensors in a unified, shockproof console, delivering precise readouts of water temperature, oil temperature, RPM, and lap timing, allowing drivers to focus on speed.

Integrated Dashboards

Tuning & Performance Car Upgrades

Our GragonGauge lineup offers street tuners the styling and mechanical integrity required for turbocharged engines. With boost levels, exhaust gas temp (EGT), and air-fuel ratio dials measuring 52mm or 60mm, retrofitting clusters into customized dashboard pods becomes seamless and aesthetically clean.

Universal Dash Mountings

Commercial Fleet & Industrial Vehicles

Beyond passenger cars, commercial utility vehicles and specialized farming gear require heavy-duty instrumentation. Ruian DongOu's instruments are engineered to repel dust and humidity, protecting essential oil pressure and electrical current tracking metrics in rugged settings.

DongOu Production Facility
Factory Efficiency

Supply Chain Resiliency & China Factory Edge

As a seasoned cluster car manufacturer based in Ruian, Wenzhou—the historic heart of China's automotive component export sector—Ruian DongOu utilizes an advanced localized raw material ecosystem. We manage the entire value chain from internal PCBA layout design, plastics injection moulding for gauge pods, to high-precision laser printing for watch faces.

This deep vertical integration yields unmatched efficiencies:

  • Cost Agility: Eliminating intermediary parts suppliers allows us to present competitive wholesale pricing configurations without sacrificing component materials.
  • Short Lead Times: Large component inventories enable us to scale from prototypes to full-batch production runs within a fraction of normal lead times.
  • Rapid ODM Customization: We offer customized automotive gauge services, supporting brand logo adjustments, shell redesigns, and custom sensor calibrations.

Innovation Hub

Technology Roadmap & The Future of Dashboards

Where automotive telemetry and digital car clusters are heading over the next decade.

Phase 1: Advanced CAN-FD Integration

Our upcoming generation of SincoTech display systems is being re-engineered to interface with CAN-FD protocols, which support higher bandwidths and faster transmission rates in contemporary sports cars and electric vehicle architectures.

Phase 2: Hybrid Analog-Digital Instruments

To preserve the raw feedback of traditional analog pointers while adopting the data versatility of TFT LCD screens, we are releasing custom hybrid gauge systems that blend moving physical stepper needles with configurable digital centers.

Phase 3: Wireless Sensors & Telematics

Through developments in low-energy Bluetooth and proprietary RF channels, we aim to design a sensor suite that eliminates firewall cabling, routing data wirelessly straight to the receiver cluster.

Compliance & Support

Global Standards & Local Support Guarantees

Ensuring our automotive instrumentation complies with international regulations while offering reliable post-sale security.

CE & FCC Testing

Our digital clusters undergo rigorous testing for electromagnetic interference (EMI) and electro-static discharge (ESD), ensuring they work smoothly alongside other vehicle electronic systems.

Vibration & Heat Testing

Instruments are tested on vibration tables and thermal chambers ranging from -30°C to +80°C, mirroring extreme track days and freezing winter operations.

Logo Customization

We enable automotive shops to white-label products, allowing custom boot screens and logo prints on dial plates for strong brand positioning.

Tech Support

Every system is backed by clear installation schematics and active engineer support channels, simplifying integration for auto electric specialists.

Product Division II

Advanced Systems & Multifunction Gauges

Discover our comprehensive collection of Bluetooth OBDII dashboard units, custom-built panels, and standalone indicators.

Wholesale Multifunction Race Dashboard

Wholesale Multifunction Race Dashboard DO922 with Bluetooth & Sensors

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Custom Race Dashboard LCD Display

Custom Multi-Function Race Dashboard OBDII Bluetooth Connection

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SincoTech DO928 Dashboard

Wholesale Racing Gauge 9 in 1 Race Dash Panel SincoTech DO928

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Wideband LCD Racing Dash

Custom DO926 Wideband LCD Racing Dash Panel with Sensor Kit

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Wholesale OBDII Racing Gauge

Wholesale Multi-Function Race Dash Panel OBDII Racing Gauge

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Custom China OBDII Dash Panels

Custom China Dashboard Racing Multi-Function OBDII Panels 7 Colors

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Touch Screen Racing Dash

Wholesale Multi-Function Racing Dash Gauge LCD Touch Screen DO909

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Wholesale Motorsport Tachometer

Wholesale 80mm Tachometer 0-11000RPM with 7 Colors for Motorsport

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Expert FAQ

Technical & Commercial FAQ

Answers to common industry questions regarding our automotive clusters and customization services.

What OBDII protocols are compatible with Ruian DongOu and SincoTech dashboards? +
Our multi-function dashboards, including the SincoTech DO903, DO921, and DO926 series, support standard OBDII protocols, notably ISO9141-2, ISO14230-4 (KWP2000), and ISO15765-4 (CAN-BUS). This ensures plug-and-play functionality for most vehicles manufactured globally after 1996.
How does the 7-color backlight system work, and can it be adjusted manually? +
Our 52mm, 60mm, and 80mm gauges feature built-in RGB LEDs. Users can easily change the backlight color (red, green, blue, yellow, cyan, purple, white) using a button on the back of the device, allowing them to match the dashboard's design to their vehicle's interior.
What custom branding and ODM options does your factory support? +
We support logo customization on dials and startup screens, custom gauge scale designs (such as modifying bar ranges to psi), and shell design adjustments. We also help write unique firmware codes to match custom engine signals for bulk wholesale orders.
What are the lead times for large-scale custom instrument orders? +
Standard product orders generally ship within 7–15 working days. Large ODM orders requiring customized injection molds, dial designs, or specific calibration software are delivered within 30–45 days, depending on requirements.
How does your factory ensure product durability in extreme environments? +
Every component is tested for durability, including vibration tests, thermal chamber testing from -30°C to +80°C, and electrical resistance tests. Our sensor kits are also sealed against water and dust ingress, making them highly reliable on the road and on the track.