1 Oxygen Sensor The Oxygen Sensor monitors oxygen levels in the exhaust gas and provides real time feedback to the engine control unit. This information is used to adjust the air fuel ratio for efficient combustion and effective emissions control. Key benefits - Improves fuel efficiency by enabling precise fuel trimming based on exhaust oxygen readings - Reduces emissions by helping maintain the proper air fuel ratio for catalytic converter effectiveness - Supports reliable engine performance and smooth idle with stable sensor input - Provides fast response in the exhaust environment and is built to withstand heat and vibration - Compatible with most gasoline engines that use a standard O2 sensor connector and common thread sizes; verify fit with your vehicle model - Robust construction with a ceramic sensing element and stainless steel housing for long service life - Available in variants including heated and non heated configurations; check selection for exact configuration and fit Key attributes - Function: measures exhaust oxygen content and sends feedback to the engine control unit to adjust fuel delivery - Compatibility: designed for standard automotive O2 sensor applications; confirm thread size and electrical connector to match your vehicle - Size: offered in multiple thread sizes and connector configurations to fit a range of applications; verify the exact fit for your vehicle - Material: ceramic sensing element (often zirconia) with stainless steel housing and protective coatings for durability - Performance: engineered for fast response and durable operation under high temperature and vibration; heated variants provide quicker warm up when required Use scenarios - Scenario 1: Replacing a worn or failed sensor on a passenger car to restore accurate fuel trim, improve fuel economy, and reduce tailpipe emissions - Scenario 2: After performing engine work or catalytic converter replacement, installing a new sensor to restore proper exhaust monitoring and catalyst efficiency - Scenario 3: During regular emission system diagnostics or maintenance of an older vehicle to verify sensor response and ensure reliable ECU control Installation notes - Confirm the correct sensor type (narrowband or wideband) and match thread size and connector to your OEM sensor - If uncertain, consult the vehicle service manual or a professional technician to ensure proper fit and electrical compatibility - When required, use the appropriate anti seize and follow safety procedures for working on hot exhaust components