Bosch 17321 Oxygen Sensor - Upstream, Upstream Left or Upstream Right

Reliable Oxygen Sensor for Ford and Lincoln Vehicles

The Bosch Actual OE Oxygen Sensor 17321 is designed to provide accurate air-fuel mixture readings for improved engine performance and emissions control. This heated, wide-band oxygen sensor is compatible with various Ford and Lincoln models, ensuring precise fit and function.

• Heated oxygen sensor for faster response times
• Specific fit for Ford and Lincoln models including F-150, Explorer, Mustang, and more
• 14.4-inch wiring harness with oblong male connector
• Threaded mounting type with 18 mm thread diameter and 22 mm hex size
• Wide-band sensor type with 5 wires and 6 terminals for accurate readings
• Durable metal housing finished in steel for long-lasting use
• Standard replacement grade for reliable performance
• Wiring harness included for easy installation

About the Bosch Actual OE Oxygen Sensor Line

The Bosch Actual OE Oxygen Sensor product line focuses on delivering sensors that meet original equipment specifications. This ensures compatibility and performance consistent with factory-installed parts. The 17321 sensor maintains Bosch's standards for quality and durability, making it a suitable replacement for emission control systems in select Ford and Lincoln vehicles.

Product Details and Specifications

This oxygen sensor features a heated design to reduce warm-up time, improving sensor accuracy shortly after engine start. The wide-band sensor type provides precise air-fuel ratio measurements, essential for modern engine management systems. The 14.4-inch wiring harness with an oblong male connector and blade terminal type allows for a secure electrical connection. The sensor mounts via a threaded 18 mm diameter fitting and uses a 22 mm hex size for installation. With a total length of 17.7 inches and a metal housing finished in steel, this sensor is built for durability and reliable operation.

Compatible Vehicles and Common Applications

• Ford F-150, F-250 Super Duty, F-350 Super Duty
• Ford Explorer, Mustang, Flex, Focus
• Ford E-150, E-250, E-350 Super Duty
• Ford Transit-150, Transit-250, Transit-350, Transit-350 HD
• Lincoln Navigator, MKC, MKS, MKT, Taurus

Issues Addressed by Bosch Oxygen Sensor 17321

• Improves engine fuel efficiency by providing accurate oxygen level data
• Helps reduce harmful emissions by optimizing combustion
• Prevents engine performance problems related to faulty oxygen sensors
• Resolves check engine light triggers caused by sensor failure
• Supports proper operation of catalytic converters and emission systems

Installation Notes and Tips

Ensure the vehicle is cool before removing the old oxygen sensor to avoid burns. Use a 22 mm oxygen sensor socket for removal and installation. Verify the wiring harness length and connector type match the vehicle’s factory setup. The sensor is threaded and requires proper torque to avoid leaks or damage. No mounting bracket is included, so use the existing mounting point on the vehicle.

Quality Assurance and Warranty

Bosch oxygen sensors are manufactured to meet or exceed OEM standards for fit, form, and function. The Actual OE Oxygen Sensor 17321 is a standard replacement grade part designed for reliable operation. While specific warranty details are not provided here, Bosch typically offers limited warranties on their emission control components to ensure customer confidence.