Denso 234-4190 Oxygen Sensor - Downstream, Upstream or Upstream Rear

Overview of the Denso OE Style Oxygen Sensor 234-4190

The Denso OE Style Oxygen Sensor 234-4190 is designed specifically for select Kia and Mazda vehicles, including the Kia Rio and Mazda 6. This heated oxygen sensor features a threaded mounting type and a precise fit to ensure optimal performance and emissions control.

• Heated oxygen sensor for faster response times
• Specific fit for Kia Rio and Mazda 6 models
• Threaded mounting with 0.708 inch thread diameter
• Four-wire design with male connector
• Wiring harness length of 11.61 inches for proper installation

Detailed Product Description

The Denso 234-4190 oxygen sensor is engineered to meet the exact specifications of the original equipment for Kia Rio and Mazda 6 vehicles. Its heated sensor type allows for quicker activation and more accurate readings of the exhaust gases, which is critical for maintaining efficient engine performance and reducing emissions. The sensor features a threaded mounting type with a 0.708 inch thread diameter, ensuring a secure and reliable fit. With four wires and a male connector, this sensor integrates seamlessly with the vehicle’s wiring harness, which measures 11.61 inches in length to accommodate proper routing and connection.

This oxygen sensor is part of Denso's OE Style product line, which focuses on providing replacement parts that closely match the original equipment in form, fit, and function. The OE Style line is designed to offer a direct replacement solution for emission control sensors, helping maintain factory-level performance and compliance.

Common Applications and Issues Addressed

• Restores accurate oxygen sensing for proper air-fuel mixture control
• Helps resolve engine performance issues such as rough idling or hesitation
• Reduces emissions by ensuring correct exhaust gas readings
• Prevents check engine light triggers related to oxygen sensor faults
• Improves fuel efficiency by maintaining optimal combustion

Installation Notes and Tips

• Ensure the vehicle is cool before installation to avoid burns
• Use appropriate tools to avoid damaging the threaded sensor
• Verify connector gender and wire count for compatibility
• Check wiring harness length (11.61 inches) for proper fitment
• Follow vehicle manufacturer torque specifications when mounting

Quality Assurance and Warranty

Denso oxygen sensors, including the 234-4190, are manufactured to meet strict quality standards and OEM specifications. This ensures reliable performance and durability in emission control applications. While specific warranty details may vary, Denso products typically come with a limited warranty covering defects in materials and workmanship.