Bosch 15320 Oxygen Sensor - Downstream

Reliable Oxygen Sensor for Hyundai and Kia Vehicles

The Bosch Validated Oxygen Sensor 15320 is designed specifically for select Hyundai and Kia models, including the Magentis, Optima, Rondo, and Sonata. This narrow-band heated oxygen sensor ensures accurate emissions control and optimal engine performance.

• Compatible with Hyundai Magentis, Kia Optima, Rondo, and Sonata
• Part number 15320 for precise fitment
• Heated narrow-band oxygen sensor type for efficient operation
• Threaded mounting type with 18 mm thread diameter and 22 mm hex size
• 16.1-inch wiring harness length with 4-wire blade terminals and male connectors
• Standard replacement grade with metal housing and steel finish
• Overall length of 19.5 inches and 18.3 inches from sealing surface to connector end

About the Bosch Validated Oxygen Sensor Line

The Bosch Validated Oxygen Sensor product line focuses on delivering sensors that meet strict OEM specifications for fit, form, and function. This ensures that the Bosch 15320 oxygen sensor provides reliable emissions control and engine management for specific vehicle applications, including Hyundai and Kia models. The line emphasizes quality and compatibility, making it a dependable choice for standard replacement needs.

Product Details and Specifications

This Bosch oxygen sensor features a heated narrow-band design, which helps the sensor reach operating temperature quickly for accurate air-fuel mixture readings. The sensor includes a 16.1-inch wiring harness with four wires and blade-type terminals housed in a rectangular male connector. The sensor mounts via a threaded 18 mm diameter fitting and uses a 22 mm hex size for installation. Constructed with a durable metal housing and finished in steel, it weighs approximately 0.375 pounds. The overall length measures 19.5 inches, with 18.3 inches from the sealing surface to the connector end, ensuring proper fitment in the exhaust system.

Common Applications and Issues Addressed

• Restores accurate oxygen sensing for improved fuel efficiency
• Helps resolve check engine light codes related to oxygen sensor failure
• Reduces emissions by providing precise air-fuel ratio data
• Improves engine performance and drivability in Hyundai Magentis and Kia Optima, Rondo, Sonata
• Replaces faulty or worn sensors to maintain emission compliance

Installation Notes and Tips

Installation requires a 22 mm wrench or oxygen sensor socket to remove and install the sensor. Ensure the threaded mounting hole is clean and free of debris before installation. The sensor’s wiring harness includes a male rectangular connector with four blade terminals, so verify connector compatibility with the vehicle’s wiring harness. No mounting bracket is included, as the sensor mounts directly via threading. Handle the sensor carefully to avoid damaging the heated element or wiring.

Quality Assurance and Warranty

The Bosch Validated Oxygen Sensor 15320 is manufactured to meet OEM standards for durability and performance. Bosch provides quality assurance through rigorous testing to ensure sensor reliability and proper emissions control. This part is a standard replacement grade sensor designed to maintain factory specifications. Warranty details should be confirmed with the parts distributor or Bosch directly.