52mm Air Fuel Ratio Gauge Digital Display | Smoked Narrowband O2 Sensor Kit for 12V Gasoline Cars

Keep your engine running at its best with this 52mm Air Fuel Ratio Gauge. It features a clear digital display and includes a narrowband O2 oxygen sensor (0258006028), giving you real-time air-fuel mixture readings for your gasoline car.

This gauge helps you monitor your engine's performance and fuel efficiency. The digital readout is easy to see at a glance, and the smoked lens adds a sleek look to your dashboard or gauge pod. Designed for 12V systems, this kit is a practical tool for any car enthusiast or DIY mechanic.

The kit includes the gauge and a narrowband oxygen sensor that works on a 0-1V signal. The sensor is designed for specific vehicle models and is not a universal fit, so it is important to check compatibility before purchase. Professional installation is highly recommended to ensure proper function and safety.

Key Features and Benefits

- 52mm gauge size that fits standard gauge pods and dash openings for a clean installation.

• Digital AFR display that provides clear, real-time air-fuel ratio readings for better engine monitoring.

• Smoked lens design that gives a modern look while reducing glare on the display.

• Includes narrowband O2 sensor (OEM 0258006028) that works on 0-1V signal for accurate readings.

• 12V DC operation that is compatible with most gasoline car electrical systems.

Who Is This For

- Car enthusiasts who want to monitor their engine's air-fuel mixture for performance tuning.

• DIY mechanics performing engine diagnostics or upgrades on compatible vehicles.

• Owners of Geely Emgrand, Citroen, Fiat, or Peugeot models that use this sensor type.

• Drivers looking to improve fuel efficiency by keeping an eye on the air-fuel ratio.

Usage Scenario

After installing a new exhaust system on his sedan, Mark wanted to make sure the engine was running efficiently. He mounted this 52mm AFR gauge in his dash and connected the included narrowband sensor. The digital display gave him instant feedback on the air-fuel mixture, helping him adjust his driving habits and confirm the engine was running smoothly.

Micro Comparison

Unlike wideband AFR gauges that require a separate controller and more complex wiring, this narrowband kit offers a simpler, more affordable solution for monitoring air-fuel ratios on compatible vehicles. It comes with the sensor and gauge in one package, making it a convenient choice for basic engine monitoring without extra components.

Specifications

Gauge Size: 52 mm / 2.0 in

Working Voltage: DC 12V

Sensor Signal Voltage: 0-1V

Sensor Thread: M18 x 1.5

Sensor Wrench Size: 22 mm

Sensor Output Voltage: Maximum ≥900mV / Minimum ≤50mV

Response Time (600mV-300mV): ≤100ms

Response Time (300mV-600mV): ≤100ms

Sensor Starting Time: ≤10s

Sensor Heating Resistance: 8.5~9.5Ω

Sensor Internal Resistance: 200~300Ω

Material: Plastic Shell

Color: Smoked Lens

Package Includes

- 1 x Air Fuel AFR Gauge

• 1 x Narrowband Oxygen Sensor

• 1 x English Manual (gauge installation only)

Why You Will Love It

This gauge gives you the confidence of knowing exactly what your engine is doing. The simple installation and clear display make it easy to use, and the included sensor saves you the trouble of buying parts separately. It is a practical upgrade for any compatible gasoline car.

Questions and Answers

Question: Is this gauge compatible with all gasoline cars?

Answer: No, this kit includes a narrowband O2 sensor that works on 0-1V signal. It is designed for specific models like Geely Emgrand, Citroen, Fiat, and Peugeot. Please check your vehicle's compatibility before ordering.

Question: Does this kit come with both the gauge and the sensor?

Answer: Yes, the package includes one AFR gauge and one narrowband oxygen sensor. If you need only one of these items, please check the available options.

Question: What voltage does this gauge require to operate?

Answer: The gauge and sensor are designed to work on a 12V DC electrical system, which is standard in most gasoline cars.

Question: Is professional installation required for this product?

Answer: Professional installation is highly recommended, especially for connecting the oxygen sensor. The included manual only covers gauge installation, not sensor wiring.

Question: What size is the gauge?

Answer: The gauge has a 52 mm (2.0 in) diameter, which fits standard gauge pods and dash openings of that size.