Denso 234-5058 Air / Fuel Ratio Sensor - Upstream

Overview of the Denso OE Style Air/Fuel Ratio Sensor

The Denso OE Style Air/Fuel Ratio Sensor 234-5058 is designed specifically for Mazda 3 and Mazda 3 Sport models. This heated sensor ensures accurate air and fuel mixture readings to help maintain optimal engine performance and emissions control.

• Heated sensor type for faster response times
• Specific fitment for Mazda 3 and Mazda 3 Sport
• 18.90-inch wiring harness length for precise installation
• Five-wire configuration with male connector
• Thread diameter of 0.711 inches for secure mounting
• Regular grade type for reliable operation

Detailed Product Description

The Denso 234-5058 air/fuel ratio sensor is engineered to provide accurate oxygen level readings by measuring the air-to-fuel mixture in the exhaust gases. This heated sensor type allows for quicker warm-up times, improving fuel efficiency and reducing emissions. The sensor features a 5-wire design with a male connector, ensuring compatibility with the vehicle’s wiring harness. With a wiring harness length of 18.90 inches and a thread diameter of 0.711 inches, this sensor is designed for a precise and secure fit in Mazda 3 and Mazda 3 Sport models.

This sensor is part of Denso's OE Style product line, which focuses on delivering components that meet original equipment specifications. The OE Style line ensures that each part, including this air/fuel ratio sensor, matches the fit, form, and function of the original sensor installed by the manufacturer, providing dependable performance and compatibility.

Common Applications and Issues Addressed

• Helps correct inaccurate air/fuel mixture readings
• Resolves engine performance issues related to faulty oxygen sensors
• Reduces emissions by maintaining proper fuel combustion
• Prevents check engine light triggers related to sensor faults
• Improves fuel economy by optimizing engine control

Installation Notes and Tips

When installing the Denso 234-5058 sensor, ensure the wiring harness is routed without sharp bends or contact with hot engine components. The 18.90-inch harness length provides flexibility for proper placement. Use appropriate tools to tighten the sensor to the specified torque to avoid damage to the thread diameter of 0.711 inches. Verify connector compatibility with the vehicle’s male connector to ensure a secure electrical connection.

Quality Assurance and Warranty

Denso OE Style sensors are manufactured to meet strict quality standards, ensuring reliable operation and durability. While specific warranty details are not provided here, Denso products typically come with manufacturer-backed warranties that cover defects in materials and workmanship. Using a sensor from the OE Style line helps maintain the integrity of your Mazda 3 or Mazda 3 Sport’s emission control system.