Bosch 15253 Oxygen Sensor - Downstream

Overview of Bosch Validated Oxygen Sensor 15253 for Mazda 3

The Bosch Validated Oxygen Sensor 15253 is designed specifically for Mazda 3 models, providing precise emission control and reliable performance. This narrow-band heated oxygen sensor ensures accurate air-fuel mixture readings to help maintain optimal engine efficiency.

• Compatible with Mazda 3 vehicles
• Part number 15253 for exact fitment
• Heated narrow-band oxygen sensor type
• Threaded mounting with 18 mm thread diameter
• 28.1-inch wiring harness length with connector included
• Standard replacement grade with metal housing
• 4-pin female rectangular connector
• Overall length of 31.5 inches for proper installation

Detailed Features and Specifications

This Bosch oxygen sensor features a heated narrow-band design, which allows for faster sensor warm-up and improved emission control. The sensor is constructed with a durable metal housing finished in steel, ensuring longevity under high-temperature conditions. It includes a 28.1-inch wiring harness with a 4-wire configuration and a female rectangular connector with four terminals, designed for a specific fit on Mazda 3 models. The sensor mounts via a threaded 18 mm diameter fitting and has a hex size of 22 mm for installation using standard tools.

About the Bosch Validated Oxygen Sensor Line

The Bosch Validated Oxygen Sensor product line focuses on providing reliable, vehicle-specific sensors that meet OEM standards. This line ensures that each sensor, including part number 15253, undergoes rigorous validation to deliver consistent performance and compatibility. The sensors are engineered to maintain emission control system integrity and support engine management systems effectively.

Common Applications and Problem Solving

• Restores accurate oxygen sensing for Mazda 3 emission systems
• Helps resolve engine performance issues related to faulty sensors
• Reduces rough idling and improves fuel economy
• Prevents check engine light triggers caused by sensor failure
• Supports compliance with emission regulations

Installation Notes and Tips

When installing the Bosch Validated Oxygen Sensor 15253, ensure the vehicle is cool to avoid burns. Use a 22 mm oxygen sensor socket for removal and installation. Verify the wiring harness length and connector type match the vehicle’s factory setup to avoid electrical issues. Thread the sensor carefully to prevent cross-threading and torque to manufacturer specifications.

Quality Assurance and Warranty

Bosch oxygen sensors are manufactured to meet strict quality standards, ensuring durability and reliable operation. The Bosch Validated Oxygen Sensor 15253 is a standard replacement grade part designed to meet or exceed OEM specifications. While specific warranty details may vary, Bosch typically offers coverage against defects in materials and workmanship.