Bosch 15431 Oxygen Sensor - Upstream Rear

Reliable Oxygen Sensor for Mazda 6 Emission Control

The Bosch Validated Oxygen Sensor 15431 is designed specifically for Mazda 6 models, ensuring precise air-fuel mixture readings for optimal engine performance. This narrow-band heated oxygen sensor helps maintain efficient emissions control and engine operation.

• Specific fit for Mazda 6 vehicles
• Narrow-band heated oxygen sensor type
• Threaded mounting with 18 mm thread diameter and 22 mm hex size
• 4-wire design with blade terminals and male connector
• 6.6-inch wiring harness length with included harness
• Durable metal housing with steel finish
• Overall length of 10 inches for proper fitment

About the Bosch Validated Oxygen Sensor Line

The Bosch Validated Oxygen Sensor product line focuses on delivering reliable and precise emission control components that meet OEM specifications. This line ensures compatibility and performance for specific vehicle applications, such as the Mazda 6, providing a standard replacement sensor that supports proper engine management and emissions compliance.

Product Details and Specifications

This Bosch oxygen sensor features a narrow-band heated sensor type, which allows for accurate detection of oxygen levels in the exhaust gases. The sensor includes a 4-wire configuration with blade terminals and a male rectangular connector, facilitating secure electrical connections. The threaded mounting type with an 18 mm thread diameter and 22 mm hex size ensures straightforward installation. The wiring harness length of 6.6 inches and overall length of 10 inches accommodate the Mazda 6’s engine bay layout. Constructed with a metal housing and steel finish, this sensor is built for durability and consistent performance.

Common Applications and Issues Addressed

• Restores accurate air-fuel ratio readings for Mazda 6 engines
• Helps resolve check engine light triggers related to oxygen sensor faults
• Improves fuel efficiency by ensuring proper combustion control
• Reduces harmful emissions by maintaining correct sensor feedback
• Prevents engine performance issues caused by faulty oxygen sensors

Installation Notes and Tips

When installing the Bosch Validated Oxygen Sensor 15431 on a Mazda 6, ensure the engine is cool to avoid burns. Use a 22 mm oxygen sensor socket for removal and installation. Verify the sensor’s wiring harness is properly connected with the male rectangular connector and blade terminals. Thread the sensor carefully to avoid cross-threading, and tighten to manufacturer torque specifications. No mounting bracket is included, so use the existing mounting location on the vehicle.

Quality Assurance and Warranty

Manufactured by Bosch, a recognized leader in automotive components, this oxygen sensor meets standard replacement grade quality. The Bosch Validated Oxygen Sensor 15431 undergoes rigorous testing to ensure reliable performance and durability. While specific warranty details may vary, Bosch typically offers coverage against defects in materials and workmanship for a defined period, supporting confidence in this emission control sensor.