J.C. Whitney JRN96090007 Heated 4-Wire Downstream Left Oxygen Sensor OEM Replacement

The J.C. Whitney JRN96090007 is a direct-fit OEM replacement oxygen sensor designed for the downstream, left position. Built as a heated 4-wire unit, this sensor monitors exhaust gases after the catalytic converter to help the engine control module (ECM) evaluate catalytic converter efficiency and maintain proper fuel trim for reduced emissions and optimal engine performance.

Key Features:

• OEM Replacement: Engineered to match original equipment specifications for a direct, no-modification installation
• Heated Design: Integrated heater element allows the sensor to reach operating temperature quickly, improving cold-start performance and emissions control
• 4-Wire Construction: Two heater wires and two signal wires for accurate, stable exhaust oxygen readings
• Downstream / Post-Catalyst Position: Designed specifically for the left downstream (rear) location to monitor catalytic converter performance
• Reliable Signal Output: Delivers consistent voltage signal to the ECM to support proper closed-loop fuel management

This oxygen sensor is a quality OEM-style replacement that restores proper exhaust monitoring function, helps eliminate check engine light codes related to downstream O2 sensor faults, and supports fuel efficiency and emissions compliance.