This high-quality oxygen sensor from Carquest is a must-have for any vehicle's exhaust and emission system. It is designed to work perfectly with a wide range of cars and trucks, ensuring accurate and reliable performance. The sensor is made with durable materials and features advanced technology for optimal accuracy. It is compatible with various OE/OEM part numbers, including 56041887AA, 56041944AA, 56041950AA, and 56041951AA, making it an ideal replacement part for your vehicle. The manufacturer part number for this sensor is CX13664. Whether you're a professional mechanic or a DIY enthusiast, this oxygen sensor is a great choice for your car or truck. It is easy to install and will provide reliable performance for many miles. So if you're looking for a high-quality oxygen sensor, this Carquest CX13664 is an excellent choice.