Shop O2 Sensors by Exhaust System Position
Finding the right car exhaust sensor starts with knowing its location. Your vehicle uses at least two: one before the catalytic converter and one after. The pre-cat O2 sensor (upstream) has the most important job, analysing raw exhaust gases to give your ECU the data it needs to make real-time fuel trim adjustments for optimal combustion.
A faulty one can directly impact power and efficiency. The post-cat sensor (downstream) works as a monitor, checking the converter's performance. Our range covers both positions, offering direct replacements that restore factory function, clear fault codes, and get your engine running cleanly and smoothly again.
Browse Oxygen Sensors by Vehicle Compatibility
Once you know the sensor's position, matching it to your vehicle is the next critical step. A generic, one-size-fits-all oxygen sensor can cause more problems than it solves by sending incorrect voltage signals to your engine's computer. That’s why our collection is organised by vehicle make and model, giving you access to parts engineered for a perfect fit.
Choosing a sensor designed for your specific car, ute, or 4x4 means the thread pitch is correct, the connector is a direct plug-in, and the wiring length is right for the factory location. This precision makes for a straightforward installation and reliable performance you can count on for thousands of kilometres.
Fix Check Engine Light Issues with Sensor Adaptors
Upgrading to a high-flow catalytic converter or a de-cat pipe can unlock performance, but it often comes with a frustrating side effect: a check engine light triggered by the post-cat sensor. Our O2 sensor adaptors are an effective fix for this exact issue. These small, precisely engineered fittings reposition the sensor slightly out of the main exhaust flow.
Many designs also incorporate a miniature catalytic element that cleans the gas sample before it reaches the sensor, tricking the ECU into thinking the main converter is functioning within its expected parameters. It's a targeted solution that keeps your dashboard clear while you enjoy your performance modifications.
Find Replacement Parts and Mounting Accessories
Sometimes the sensor itself is fine, but the surrounding hardware is the problem. After years of heat cycles and exposure to the elements, sensor nuts can seize and strip during removal. We stock universal weld-in nuts and plugs to repair damaged threads or to add a sensor port to a custom exhaust pipe.
For diesel and turbocharged applications, we also offer weld-in bungs specifically for an exhaust gas temperature sensor, i.e., the EGT pyrometer. Installing a dedicated exhaust temperature sensor is crucial for monitoring engine health under heavy loads, preventing costly damage from excessive heat.
Buy High-Performance Oxygen Sensors and EGT Accessories Today
Your vehicle’s performance depends on accurate data. At Perform-Ex Auto, we provide the sensors, wiring, and hardware to keep that data flowing correctly, from standard repairs to full-blown performance builds. Find the right parts for your vehicle today and restore your engine’s peak operational efficiency.
However, a precise O2 sensor is just one part of a high-functioning system. To complete your project, we stock a full range of exhaust accessories to help you build a setup that delivers power, sound, and durability. Browse our full selection of:
If you need assistance choosing the best products for your vehicle make and model, contact our expert team. We’re passionate about cars and ready to help you get the job done right.
