Goss Oxygen Sensor OX703 – Lambda O2 Sensor Replacement

PRODUCT OVERVIEW

The Goss Oxygen Sensor OX703 is a direct replacement O2 (lambda) sensor designed to accurately measure oxygen content in exhaust gases. By feeding precise data to the engine control unit (ECU), it helps maintain the correct air/fuel ratio for optimal performance, fuel efficiency and reduced emissions.

FEATURES & BENEFITS

• Accurate exhaust oxygen measurement for correct air/fuel ratio
• Supports smooth engine operation, power and fuel efficiency
• Helps reduce emissions and protect catalytic converter life
• Engineered as a quality replacement for the original O2 sensor
• Built to withstand harsh under‑bonnet temperatures and conditions

FUNCTION

The oxygen sensor (lambda sensor) continuously monitors oxygen levels in the exhaust stream and sends a voltage signal to the ECU. The ECU uses this signal to adjust fuel delivery, ensuring the mixture stays within the ideal range. A failing sensor can cause poor fuel economy, loss of power, rough idle and increased emissions, and may trigger a check engine light.

WHEN TO REPLACE

• Illuminated check engine light with O2 sensor‑related fault codes
• Noticeable drop in fuel economy or engine performance
• Rough idle, hesitation or poor drivability
• Failed or borderline emissions test results

Suspect sensors should be tested using appropriate diagnostic tools (multimeter or scan tool) to confirm faults before replacement.

PART DETAILS

• Brand: Goss
• Part number: OX703
• Type: Oxygen (O2) / lambda sensor

Check the vehicle compatibility information or confirm by part number to ensure correct fitment before purchase.