J.C. Whitney JARBM960910 Heated 4-Wire Upstream Oxygen Sensor OEM Replacement

The J.C. Whitney JARBM960910 is a direct-fit OEM replacement heated 4-wire oxygen sensor designed for upstream (pre-catalytic converter) installation. This sensor monitors exhaust gases before they enter the catalytic converter, providing critical feedback to the engine control module (ECM) to maintain optimal air/fuel mixture and emissions performance.

Key Features:

• Heated Design: Built-in heater element reaches operating temperature faster, improving cold-start fuel efficiency and emissions control
• 4-Wire Construction: Two heater wires and two signal wires for precise oxygen measurement and rapid warm-up
• Upstream/Pre-Cat Positioning: Installs before the catalytic converter for primary fuel trim feedback
• OEM Replacement: Direct-fit design matches original equipment specifications for straightforward installation
• Restores Performance: Corrects symptoms such as rough idle, poor fuel economy, failed emissions tests, and illuminated check engine light (O2 sensor fault codes)

This oxygen sensor is a reliable, cost-effective solution to restore proper closed-loop fuel management and help your vehicle pass emissions inspections. Plug-and-play fitment makes installation straightforward with standard hand tools.