1. High-Quality Replacement: The SG1813 SG1814 5C5Z-9F472- Oxygen O2 Sensor is designed as a reliable replacement for your Focus, Contour, E-150, E-250, E-350, and Mercury Marauder, ensuring optimal engine performance. 2. Enhanced Efficiency: By accurately measuring oxygen levels in the exhaust, this Oxygen O2 Sensor helps improve efficiency for your vehicle, making it an essential component for maintaining your or Mercury's economy. 3. Direct Fit Design: Our SG1813 SG1814 Oxygen O2 Sensor provides a direct fit for easy installation on various models including for Focus, Contour, E-150, E-250, E-350, and Mercury Marauder, saving you time and effort on repairs. 4. Construction: Crafted with high-quality materials, the 5C5Z-9F472- Oxygen O2 Sensor is built to withstand harsh conditions and last longer than standard sensors, ensuring dependable performance for your or Mercury vehicle. 5. Comprehensive Compatibility: This Oxygen O2 Sensor is specifically engineered to be compatible with a wide range of vehicles, including for the Focus, Contour, E-150, E-250, E-350, and Mercury Marauder, making it a versatile choice for your automotive needs. Color: As Shown Material: Plastic+Metal Package Contents: 1x Oxygen O2 Sensor Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.