O2 Oxygen Sensor; Upstream (99-10 Mustang)Find parts that fit my vehicle

Precision Exhaust Monitoring. The O2 Oxygen Sensor; Upstream helps regulate the engine’s air-fuel mixture by measuring oxygen levels in the exhaust gases. This allows the engine control unit to optimize combustion for improved fuel efficiency and reduced emissions, ensuring reliable performance.

Construction and Appearance. Crafted with durable materials featuring a heated narrowband sensor design, it includes a circular connector and a robust M18 threaded body. The sensor is engineered for longevity and reliable data output, with a 4-pin male terminal and 184mm wiring harness for secure connection.

Installation. Designed for straightforward installation, this sensor fits directly into the factory mounting location without modifications or additional drilling. It is positioned upstream on either the right bank 1 sensor 1 or left bank 2 sensor 1.

Warranty. This oxygen sensor is backed by a 3-year warranty against manufacturing defects, offering peace of mind with your purchase.
Application. Specifically fits the 2003 Ford Explorer, suitable for upstream right B1S1 or upstream left B2S1 positions.

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