APW Warehouse Supplies AP4-287 Oxygen Sensor Replacement

The APW Warehouse Supplies AP4-287 is an aftermarket replacement oxygen sensor (O2 sensor) designed to restore proper air/fuel mixture monitoring and exhaust emission control to compatible vehicles. Oxygen sensors play a critical role in your engine management system — measuring the oxygen content in exhaust gases and sending real-time feedback to the ECU to optimize fuel delivery, reduce emissions, and maintain fuel efficiency.

Key Features:

• Direct-fit replacement for compatible OEM oxygen sensor applications
• Helps restore proper closed-loop fuel control and engine performance
• Designed to meet or exceed OEM specifications for accurate exhaust gas measurement
• Addresses common symptoms such as poor fuel economy, failed emissions tests, and check engine light (CEL) codes related to O2 sensor faults (e.g., P0130–P0167 range)
• Connector and wiring harness designed for plug-and-play installation on compatible vehicles

Replacing a faulty oxygen sensor with the AP4-287 can help eliminate rough idling, improve throttle response, and reduce harmful exhaust emissions. Always confirm fitment compatibility using your vehicle's year, make, model, and engine specifications before installation.