J.C. Whitney JRS96090013 Downstream Heated Oxygen Sensor 4-Wire OEM Replacement

The J.C. Whitney JRS96090013 is a direct-fit, OEM-replacement downstream oxygen sensor engineered for the 2003 Saab 9-3. Featuring a 4-wire heated design, this sensor is positioned after the catalytic converter (post-cat / Sensor 2) to monitor exhaust gas output and relay accurate data to the engine control module for optimal fuel trim and emissions compliance.

The integrated heater element allows the sensor to reach operating temperature quickly after a cold start, reducing the time the engine spends running in open-loop mode and improving overall fuel efficiency. The OE-style connector and wiring harness ensure a plug-and-play installation with no splicing or adapters required.

Key Features:

• Direct OEM Replacement — designed to match original equipment specifications for a precise, hassle-free fit
• 4-Wire Heated Construction — two signal wires and two heater wires for fast sensor warm-up and accurate readings
• Downstream / After Catalytic Converter Position — monitors catalytic converter efficiency and exhaust emissions (Bank 1, Sensor 2)
• OE-Style Connector — plug-and-play installation with factory-matched connector and wire length
• Backed by J.C. Whitney's 1-Year Unlimited-Mileage Warranty

Replacing a faulty downstream oxygen sensor can resolve P0136, P0137, P0138, P0140, and related OBD-II trouble codes, and helps restore proper fuel economy and emissions performance to OEM standards.