J.C. Whitney SET-ARBJ960905-C OEM Replacement Oxygen Sensor Set

The J.C. Whitney SET-ARBJ960905-C is an OEM replacement oxygen sensor set designed to restore your vehicle's exhaust monitoring and fuel management system to factory performance. Oxygen sensors—also known as O2 sensors or lambda sensors—measure the oxygen content in exhaust gases and relay that data to the engine control module (ECM) to maintain the optimal air-fuel mixture for efficient combustion and reduced emissions.

Key Features:

• Direct-fit OEM replacement design for straightforward installation
• 4-wire heated sensor construction for fast warm-up and accurate readings across operating temperatures
• Threaded-in mounting style with M18-1.5 thread size
• 7/8 in. hex size for standard socket removal and installation
• Sold as a set — upstream (before catalytic converter) and downstream (after catalytic converter) sensors included
• Backed by J.C. Whitney's 1-year, unlimited-mileage warranty

A worn or failing O2 sensor can cause poor fuel economy, rough idling, failed emissions tests, and potential damage to the catalytic converter. Replacing the full sensor set restores precise exhaust feedback to the ECM, helping maintain clean combustion, optimal fuel efficiency, and emissions compliance. This J.C. Whitney set delivers a reliable, cost-effective alternative to dealer-sourced parts.