Bosch 16651 Oxygen Sensor - Downstream

Overview of Bosch Actual OE Oxygen Sensor 16651

The Bosch Actual OE Oxygen Sensor 16651 is designed specifically for select Hyundai and Kia models, including the Elantra, Elantra Coupe, Elantra GT, and Soul. This narrow-band heated oxygen sensor ensures accurate emissions control and optimal engine performance by monitoring exhaust gases effectively.

• Specific fit for Hyundai Elantra, Elantra Coupe, Elantra GT, and Kia Soul
• Heated narrow-band oxygen sensor for precise air-fuel mixture readings
• Threaded mounting type with 18 mm thread diameter and 22 mm hex size
• Includes a 34.4-inch wiring harness with 4-pin female connector
• Durable metal housing finished in steel for long-lasting use
• Standard replacement grade with universal wiring harness included

Detailed Product Features and Specifications

This Bosch oxygen sensor (part number 16651) features a narrow-band heated sensor type, which provides reliable and consistent feedback to the vehicle’s engine control unit (ECU). The sensor is threaded with an 18 mm diameter and a 22 mm hex size for secure installation. It comes with a 34.4-inch wiring harness and a 4-pin female connector with a square shape, ensuring compatibility with the specific wiring systems of Hyundai and Kia vehicles. The sensor’s metal housing and steel finish contribute to its durability under high-temperature exhaust conditions. The overall length from sealing surface to connector end measures 36.6 inches, allowing for proper fitment in the designated mounting location.

About the Bosch Actual OE Oxygen Sensor Product Line

The Bosch Actual OE Oxygen Sensor line is engineered to meet original equipment specifications, providing a direct replacement for factory-installed sensors. This product line focuses on delivering precise sensor performance and reliable emissions control, making it suitable for vehicles requiring exact fitment and function. The 16651 sensor is part of this line, ensuring it matches the quality and design of the original sensor installed in Hyundai and Kia models.

Common Applications and Issues Addressed

• Restores accurate air-fuel ratio readings for improved engine efficiency
• Helps resolve check engine light triggers related to oxygen sensor faults
• Reduces emissions by ensuring proper catalytic converter function
• Prevents rough idling and poor fuel economy caused by faulty sensors
• Supports smooth engine performance and drivability

Installation Notes and Tips

Installation of the Bosch 16651 oxygen sensor requires a threaded mounting location compatible with an 18 mm diameter sensor. Use a 22 mm oxygen sensor socket or wrench for removal and installation. Ensure the wiring harness is connected securely to the female 4-pin connector with a square shape. Avoid damaging the sensor’s wiring during installation and verify the sensor is properly threaded to prevent exhaust leaks. 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 strict quality standards and undergo rigorous testing to ensure durability and performance. The Actual OE Oxygen Sensor 16651 is a standard replacement grade part designed to match OEM specifications. While specific warranty details are not provided here, Bosch typically offers limited warranties on their emission control sensors to cover defects in materials and workmanship.