J.C. Whitney SET-JARBA960903 OEM Replacement Oxygen Sensor Set

The J.C. Whitney SET-JARBA960903 is an OEM-replacement oxygen sensor set designed to restore proper air-fuel ratio monitoring and exhaust emissions management to your vehicle. As a direct-fit replacement, this set installs using the original mounting location and connector, eliminating the need for modifications or splicing.

Oxygen sensors (O2 sensors) are critical components in your vehicle's engine management system. They continuously monitor the oxygen content in exhaust gases and relay that data to the engine control module (ECM), allowing it to maintain the ideal stoichiometric air-fuel mixture for efficient combustion, optimal fuel economy, and reduced emissions.

Key Features:

• OEM Replacement Quality – Engineered to meet or exceed original equipment specifications
• Direct-Fit Design – Threaded-in mounting style with M18-1.5 thread size for straightforward installation
• 4-Wire Heated Sensor – Heated element allows the sensor to reach operating temperature quickly for accurate readings
• 7/8 in. Hex Size – Compatible with standard O2 sensor sockets for easy removal and installation
• Set Quantity – Includes multiple sensors to cover both upstream (before catalytic converter) and downstream (after catalytic converter) positions
• 1-Year Unlimited-Mileage Warranty – Backed by J.C. Whitney's peace-of-mind coverage

Replacing a faulty oxygen sensor restores proper closed-loop fuel control, resolves common issues such as poor fuel economy, rough idle, failed emissions tests, and illuminated check engine lights related to O2 sensor fault codes. This J.C. Whitney set provides a cost-effective, reliable solution for restoring your vehicle's emissions and performance systems to factory specification.