Check the listing for details. 1982-1993 Corvette C3-C4 Oxygen Sensor Diagnostic Test Tool. Condition: New. Listed at 24.95 USD. 1982-1993 Corvette C3-C4 Oxygen Sensor Diagnostic Test Tool A defective Corvette Oxygen Sensor will not supply the correct information the ECM needs for proper engine performance. This tool allows you to test the oxygen sensor with a digital voltmeter. The defective sensor can easily be replaced, saving you a large bill from the local repair shop. Simplifies DVOM TestingHelps Regulate Fuel Mixture Click here for more Corvette Tools! Visit Mid America Motorworks eBay store for Corvettes! We offer over 9,500 Restoration Parts, Performance Upgrades and Personal Accessories for 1953-2023 Corvettes and Corvette Owners. FREE SHIPPING within 48 STATES. If shipping to: Alaska, Hawaii or Puerto Rico please email our eBay Store for a shipping quote. For shipping outside the US please use the eBay Global Shipping program. Thanks for looking!