J.C. Whitney JRH96090013 Heated Downstream Oxygen Sensor 4-Wire OEM Replacement

The J.C. Whitney JRH96090013 is a direct-fit, heated downstream oxygen sensor designed as an OEM-quality replacement. Engineered to restore proper exhaust monitoring function, this sensor is a plug-and-play solution that helps maintain accurate air/fuel ratio feedback to the engine control module (ECM).

Positioned after the catalytic converter, the downstream O2 sensor (also referred to as the post-cat or rear oxygen sensor) monitors catalytic converter efficiency and helps the ECM determine if the converter is functioning within acceptable parameters. A failed downstream sensor can trigger a check engine light and lead to failed emissions testing.

Key Features:

• Heated Design: Built-in heater element allows the sensor to reach operating temperature quickly, ensuring accurate readings even during cold starts and short trips
• 4-Wire Construction: Two heater wires and two signal wires for reliable, stable output signal
• Direct Fit: Designed as a drop-in OEM replacement — no splicing or adapters required
• OEM-Quality Materials: Constructed to meet or exceed original equipment specifications for longevity and accurate performance
• Downstream / Post-Catalyst Position: Monitors catalytic converter efficiency after the exhaust passes through the converter
• 1-Year J.C. Whitney Warranty: Backed by J.C. Whitney's standard replacement warranty

Replacing a faulty oxygen sensor promptly helps prevent unnecessary fuel waste, rough idling, and potential damage to the catalytic converter. The JRH96090013 offers a cost-effective, direct-fit solution to restore your vehicle's emissions system to factory performance standards.