Alfa Romeo 156 GTV Spider Oxygen Sensor 4 Wire Lambda Probe
Keep your Alfa Romeo running clean and efficient with the WEIDA Auto Parts 4-Wire Oxygen Sensor, a precise Lambda probe designed for the Alfa Romeo 156 GTV Spider (also compatible with Fiat and Lancia variants that use OEM 0258006206). This heated, four-wire sensor gives the engine control unit (ECU) accurate readings of exhaust oxygen levels, enabling optimal air–fuel mixture, lower emissions, and steadier performance across a wide range of driving conditions.
Built as a direct replacement for aging or faulty sensors, this Lambda probe helps restore responsive throttle, smoother idle, and better fuel economy by ensuring the ECU makes informed adjustments based on real-time exhaust data. The heated design warms up quickly for accurate readings sooner, reducing cold-start emissions and protecting the catalytic converter from prolonged rich/lean conditions. With OEM reference numbers 0258006206 (and 0258006731 as an additional fitment reference), it’s engineered to fit Alfa Romeo 156 GTV Spider models and related Fiat/Lancia configurations, offering reliable performance straight out of the box.
Over time, oxygen sensors can degrade, causing fluctuating fuel trims and reduced efficiency. This WEIDA sensor provides consistent signal output, helping your vehicle meet Euro emissions standards while maintaining peak engine response. Its Chinese-origin manufacturing reflects a careful balance of cost-effective production and dependable sensor technology, designed to withstand the temperatures and conditions of exhaust systems.
All electronic and mechanical equipment, devices and machines sold by InterCyprus to EU countries are CE certified and carry a two year warranty.
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Benefits & Tips
- Restore accurate oxygen readings to the ECU, improving air–fuel ratio control and reducing unnecessary fuel consumption.
- Supports faster warm-up thanks to the heated four-wire design, leading to smoother starts and lower cold-start emissions.
- Ideal as a maintenance upgrade when diagnosing rough idle, hesitation, or poor fuel economy on Alfa Romeo 156 GTV Spider and related models.
Product specifications
- Brand: WEIDA AUTO PARTS
- Product type: Oxygen Sensor / Lambda Probe
- Sensor configuration: 4-wire heated oxygen sensor
- OEM numbers: 0258006206 and 0258006731
- Application: For Alfa Romeo 156 GTV Spider; Fiat; Lancia (meets OEM fitment for listed models)
- Sensor type: Piezoelectric
- Origin: Mainland China
- Measuring range: Compatible with the exhaust oxygen levels for the listed vehicles
- Notes: Direct replacement part designed to match the original sensor’s electrical connections and mounting
Package includes:
- 1 x WEIDA 4-Wire Oxygen Sensor (Lambda Probe) matching OEM references
Warnings/Reminders
- Install by a qualified technician or experienced mechanic.
- Ensure the engine and exhaust system are cool before handling the sensor.
- Disconnect the battery before installation; handle the sensor carefully to avoid damaging the sensor tip or wiring harness.
- Replace with a new seal/gasket if required and follow proper torque specs for mounting.
- Avoid contact with oil, gasoline, or silicone-based compounds that can contaminate the sensor element.