Bosch 18041 Oxygen Sensor - Downstream

Reliable Oxygen Sensor for Mazda 3 and 3 Sport

The Bosch Validated Oxygen Sensor 18041 is designed specifically for Mazda 3 and Mazda 3 Sport models. This narrow-band heated oxygen sensor ensures accurate emission control and optimal engine performance by precisely monitoring exhaust gases.

• Specific fit for Mazda 3 and 3 Sport models
• Heated narrow-band oxygen sensor for fast response
• Threaded mounting type with 18 mm thread diameter
• Includes 10.6-inch wiring harness with 4 wires and blade terminals
• Durable metal housing with steel finish and 22 mm hex size
• Connector features a square shape with male gender and 4 terminals
• Overall length of 14 inches for proper installation
• Wiring harness included for direct replacement

About the Bosch Validated Oxygen Sensor Line

The Bosch Validated Oxygen Sensor product line focuses on delivering reliable emission control components that meet or exceed OEM specifications. The 18041 sensor is part of this line, offering a standard replacement grade with precise fitment and durable construction. This ensures consistent performance and compatibility with specific vehicle applications like the Mazda 3 and 3 Sport.

Product Details and Specifications

This Bosch oxygen sensor features a narrow-band heated design, which allows it to quickly reach operating temperature and provide accurate oxygen level readings. The sensor’s metal housing and steel finish contribute to its durability under harsh engine conditions. It mounts via a threaded connection with an 18 mm diameter and 22 mm hex size for easy installation and removal. The included wiring harness measures 10.6 inches and has four wires terminated with blade terminals, connecting to a square-shaped male connector with four terminals. The overall length of the sensor assembly is 14 inches, with 12.8 inches from the sealing surface to the end of the connector, ensuring proper fitment in the exhaust system.

Common Applications and Issues Addressed

• Replacement for faulty or failing oxygen sensors in Mazda 3 and 3 Sport
• Helps resolve engine performance issues related to incorrect air-fuel mixture
• Reduces emissions by providing accurate feedback to the engine control unit
• Prevents check engine light triggers caused by sensor malfunction
• Improves fuel efficiency by maintaining proper combustion

Installation Notes and Tips

• Ensure vehicle compatibility with Mazda 3 or 3 Sport before installation
• Use a 22 mm oxygen sensor socket for removal and installation
• Do not overtighten the sensor; torque to manufacturer specifications
• Inspect wiring harness and connector for damage before installation
• Allow the engine to cool before replacing the sensor to avoid burns

Quality Assurance and Warranty

The Bosch Validated Oxygen Sensor 18041 is manufactured to meet OEM standards for fit, form, and function. Bosch provides a standard replacement grade sensor with reliable performance and durability. While specific warranty details may vary, Bosch typically offers coverage against defects in materials and workmanship to ensure customer confidence in the product.