J.C. Whitney JARBS960907 Heated 4-Wire Downstream Oxygen Sensor OEM Replacement

The J.C. Whitney JARBS960907 is a heated, 4-wire downstream (after catalytic converter) oxygen sensor designed as a direct OEM replacement. Engineered to restore proper exhaust monitoring and fuel management to your vehicle, this sensor plugs directly into the factory wiring harness for a straightforward, no-modification installation.

The downstream O2 sensor monitors exhaust gases exiting the catalytic converter, providing critical feedback to the engine control unit (ECU) to optimize the air/fuel ratio, improve fuel efficiency, and ensure emissions compliance. A failed downstream sensor commonly triggers a Check Engine light and can lead to reduced fuel economy and failed emissions tests.

Key Features:

• Sensor Type: Heated oxygen sensor (HO2S) for faster warm-up and accurate readings at lower temperatures
• Wiring: 4-wire design — two heater wires and two signal wires — for compatibility with factory connectors
• Location: Downstream / after catalytic converter (Bank 1, Sensor 2)
• Fit Type: Direct OEM replacement with factory-matching connector
• Mounting: Threaded installation into existing exhaust bung
• Quantity: Sold individually

This sensor is sold individually and is intended as a precise OEM-quality replacement to help restore factory engine performance and emissions standards.