J.C. Whitney JRH96090014 Upstream Heated Oxygen Sensor 4-Wire OEM Replacement

The J.C. Whitney JRH96090014 is a direct-fit, heated upstream oxygen sensor (O2 sensor) designed as an OEM-quality replacement for select Hyundai Tiburon and Elantra models equipped with the L4 2.0L engine. This sensor is installed in the upstream (pre-catalytic converter) position, where it monitors exhaust oxygen content to help the engine control unit maintain an optimal air-fuel ratio for efficient combustion.

The 4-wire heated design integrates a built-in heating element, allowing the sensor to reach operating temperature quickly after a cold start. This reduces the time the engine runs in open-loop mode and helps minimize harmful emissions and fuel waste during warm-up cycles.

Key Features:

• Direct-fit OEM replacement — designed to match original equipment specifications for a plug-and-play installation
• 4-wire heated sensor — built-in heater circuit enables faster sensor warm-up and accurate readings sooner after startup
• Upstream (Bank 1, Sensor 1) position — mounts before the catalytic converter to monitor the air-fuel mixture entering the converter
• Threaded mounting style — installs into the existing bung in the exhaust system without modification
• Supports OE part numbers: 3921023800, 250-24768, 2344938
• Sold individually — includes one oxygen sensor

Replacing a faulty upstream O2 sensor can resolve a lit Check Engine light, restore proper fuel trim operation, improve fuel economy, and reduce exhaust emissions. This J.C. Whitney sensor is backed by a 1-year, unlimited-mileage warranty for worry-free installation.