J.C. Whitney JRN96090010 Heated Oxygen Sensor 4-Wire Upstream Left OEM Replacement

The J.C. Whitney JRN96090010 is a direct-fit, OEM-replacement upstream oxygen sensor designed to restore proper exhaust monitoring and fuel management performance. This is a 4-wire heated (HO2S) sensor positioned on the left (driver's side) upstream location, engineered to meet or exceed original equipment specifications.

Oxygen sensors play a critical role in your vehicle's engine management system by continuously measuring exhaust oxygen content and relaying that data to the ECU. A faulty O2 sensor can result in poor fuel economy, failed emissions tests, rough idle, and illuminated check engine lights. Replacing it with a quality OEM-spec unit restores closed-loop fuel control and optimal combustion efficiency.

Key Features:

• OEM Replacement — Designed to match original equipment fit, form, and function
• 4-Wire Heated Design — Integrated heater circuit reaches operating temperature faster for quicker closed-loop operation
• Upstream / Left Position — Correct placement for pre-catalytic converter exhaust monitoring on the left bank
• Direct Fit — No modification required; plug-and-play installation with factory connectors
• Restores Fuel Efficiency — Helps the ECU maintain the proper air/fuel ratio
• Emissions Compliance — Supports passing OBD-II emissions readiness monitors

The J.C. Whitney JRN96090010 is a reliable, cost-effective solution for restoring your vehicle's exhaust and emissions system to factory performance standards.