J.C. Whitney JDL96090008 Downstream Heated Oxygen Sensor 4-Wire Front OEM Replacement

The J.C. Whitney JDL96090008 is a direct-fit OEM replacement oxygen sensor designed for front, downstream placement on select Toyota and Lexus vehicles. This heated, 4-wire oxygen sensor restores proper air-fuel ratio monitoring to your vehicle's engine management system, helping maintain optimal fuel economy, reduce emissions, and protect catalytic converter performance.

Downstream oxygen sensors (also called post-catalyst or rear O2 sensors) monitor the efficiency of the catalytic converter and report back to the ECU. A failing downstream O2 sensor can trigger a check engine light (CEL), cause poor fuel economy, and lead to emissions test failure. This replacement unit matches OEM specifications for a seamless, reliable repair.

Key Features:

• OEM Replacement – Engineered to meet original equipment specifications for accurate fit and function
• Heated Design – Integrated heater circuit reaches operating temperature quickly, even during cold starts
• 4-Wire Construction – Two heater wires and two sensor signal wires for precise, stable readings
• Front Downstream Position – Designed for the post-catalytic converter location on the front bank
• Plug-and-Play Installation – Direct connector match eliminates splicing or wiring modifications
• Restores CEL-Free Operation – Clears oxygen sensor-related diagnostic trouble codes (DTCs)

Compatible with the Lexus CT200h (2011–2017), Lexus RX350 (2014–2015), and Toyota Highlander (2011–2016). This sensor is a reliable, cost-effective alternative to dealership pricing without sacrificing quality or accuracy.