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Replacing a worn-out oxygen sensor will save you money. Properly functioning oxygen sensors are important when it comes to your vehicle's fuel economy and reducing harmful exhaust emissions. That's why checking for, and possibly replacing, a worn-out oxygen sensor is an important part of every routine tune-up.

This is an OEM Bosch replacement oxygen sensor good for pre-cat or post-cat positions. All 98-02 LS1 engines are equipped with 4 oxygen sensors; 2 front and 2 rear.