J.C. Whitney JRA96090005 Downstream Heated 4-Wire Oxygen Sensor OEM Replacement

The J.C. Whitney JRA96090005 is a direct-fit, OEM-replacement downstream oxygen sensor (O2 sensor) designed for select Acura MDX, Acura Pilot, and Acura RDX models. Engineered to meet or exceed original equipment specifications, this heated 4-wire sensor restores proper exhaust monitoring and engine management function without the hassle of cutting or splicing wires.

The downstream oxygen sensor is positioned after the catalytic converter and plays a critical role in monitoring catalytic converter efficiency. The engine control module (ECM) uses its signal to verify that the catalyst is functioning correctly and to maintain compliance with emissions standards. A failed downstream O2 sensor can trigger a check engine light, cause failed emissions tests, and — if ignored — lead to costly catalytic converter damage.

Key Features:

• Direct-fit OEM replacement — plug-and-play installation with factory-matched connector; no wire splicing required
• Heated sensor design — integrated heater element reaches operating temperature quickly for accurate readings across all driving conditions
• 4-wire construction — two heater circuit wires and two signal wires for reliable communication with the vehicle ECM
• Downstream / post-catalytic converter location — monitors catalyst efficiency (Sensor 2 position)
• Threaded mounting style with standard M18x1.5 thread pitch for secure installation
• Built to OEM specifications — restores proper closed-loop fuel control and emissions system performance
• 1-year J.C. Whitney warranty — backed by unlimited-mileage coverage for peace of mind

Installation is straightforward and typically does not require special tools beyond an oxygen sensor socket. It is recommended to apply anti-seize compound to the threads and torque to approximately 33 ft-lbs for a secure, leak-free fit. Always clear any stored diagnostic trouble codes (DTCs) after installation to allow the ECM to recalibrate.