Bosch 15126 Oxygen Sensor - Downstream Left

Reliable Oxygen Sensor for Lexus IS250 and IS350

The Bosch Validated Oxygen Sensor 15126 is designed specifically for Lexus IS250 and IS350 models. This narrow-band heated oxygen sensor ensures accurate emission control and optimal engine performance by precisely monitoring exhaust gases.

• Compatible with Lexus IS250 and IS350
• Part number 15126 for exact fitment
• Heated narrow-band oxygen sensor type
• Threaded mounting with 18 mm thread diameter
• Includes 40.6-inch wiring harness with 4 wires and blade terminals
• Durable metal housing with steel finish
• Connector features a rectangular shape with male terminals
• Standard replacement grade for reliable performance

About the Bosch Validated Oxygen Sensor Line

The Bosch Validated Oxygen Sensor product line focuses on delivering precise emission control components that meet OEM specifications. This line includes sensors that are tested and validated for specific vehicle applications, such as the Lexus IS250 and IS350, ensuring compatibility and consistent performance in emission systems.

Detailed Product Description

This Bosch oxygen sensor 15126 is a narrow-band heated sensor designed to provide accurate air-fuel ratio readings to the engine control unit. It features a threaded mounting type with an 18 mm thread diameter and a 22 mm hex size for installation. The sensor includes a 40.6-inch wiring harness with four wires and blade terminals, housed in a durable metal casing with a steel finish. The connector is rectangular with male terminals, designed for a specific fit to Lexus IS250 and IS350 models. The sensor’s heated element helps it reach operating temperature quickly, improving emission control efficiency.

Common Applications and Issues Addressed

• Restores proper air-fuel mixture readings for engine management
• Resolves check engine light triggers related to oxygen sensor faults
• Improves fuel efficiency by ensuring accurate exhaust gas monitoring
• Reduces harmful emissions by maintaining optimal combustion
• Prevents rough idling and engine performance issues caused by faulty sensors

Installation Notes and Tips

• Ensure vehicle compatibility with Lexus IS250 or IS350 before installation
• Use a 22 mm wrench for sensor removal and installation
• Do not overtighten the sensor; follow torque specifications for 18 mm threaded sensors
• Inspect wiring harness and connector for damage before installation
• Verify connector polarity and secure connection to avoid signal issues

Quality Assurance and Warranty

The Bosch Validated Oxygen Sensor 15126 is manufactured to meet OEM standards for fit, form, and function. It undergoes rigorous testing to ensure durability and reliable performance in emission control systems. While specific warranty details may vary, Bosch typically offers coverage against defects in materials and workmanship to support long-term use in Lexus IS250 and IS350 vehicles.