1821376J01 Suzuki SENSOR, OXYGEN, Price: 141.06$, Weight: 0.12kg

Premium Oxygen Sensor for clean performance

This O2/lambda unit keeps the engine in closed-loop control, balancing fuel and air for smooth power, low emissions, and longer catalyst life. A fast heater shortens warm-up, improves MPG, and reduces exhaust odor. Built to OEM standards with a corrosion-resistant body and shielded wiring for stable signals.

Why you need it

• Holds air–fuel ratio at stoichiometric for efficient burn
• Protects the catalytic converter from rich-mix damage
• Cuts fuel use and stabilizes idle
• Helps pass emissions testing

How it works ⛽

Inside is a zirconia ceramic cell in a vented steel shell. It compares oxygen in exhaust to outside air and generates a 0.1–0.9 V signal. The ECU reads this voltage and trims fuel (STFT/LTFT) many times per second. An internal heater brings the element to temperature fast for accurate feedback, especially at cold start.

If it fails ⚠️

• Check Engine Light, codes like P0130–P0135
• Rough idle, hesitation, poor MPG
• Rich smell, sulfur odor, dark tailpipe
• Overheated or clogged catalytic converter; inspection failure

Install tips ✅

Use an O2 socket, avoid twisting the harness, fit a fresh seal, torque to spec, and apply a tiny amount of anti-seize on threads (not on the tip). Check for exhaust leaks, clear codes, and reset fuel trims after installation.

Compatibility

• Jimny