J.C. Whitney JT960916 Upstream Heated Oxygen Sensor 4-Wire 1.8L

The J.C. Whitney JT960916 is a direct-fit OEM replacement upstream heated oxygen sensor designed for the Toyota Corolla and Toyota Matrix equipped with the 1.8L 4-cylinder engine. This 4-wire heated sensor restores proper air/fuel mixture feedback to the engine control module (ECM), helping maintain optimal fuel economy, reduce emissions, and prevent check engine lights caused by a failing or degraded O2 sensor.

Key Features:

• Sensor Type: Heated oxygen sensor (HO2S)
• Wiring: 4-wire configuration for compatibility with heated sensor circuits
• Position: Upstream (pre-catalytic converter / Bank 1, Sensor 1)
• Engine: 1.8L 4-cylinder (1ZZ-FE)
• Construction: OEM-replacement quality for reliable, long-lasting performance
• Function: Monitors exhaust gases before the catalytic converter to regulate the air/fuel ratio

Designed as a direct OEM replacement, the JT960916 installs without modification using the factory connector and mounting thread, making it a straightforward repair for restoring proper emissions system operation. Replacing a faulty upstream oxygen sensor can resolve rough idle, poor fuel mileage, and failed emissions tests.