Bosch 13544 Oxygen Sensor - Downstream, Upstream or Upstream Right

Reliable Oxygen Sensor for Lexus, Toyota, and Pontiac Models

The Bosch Engineered Oxygen Sensor 13544 is designed to provide accurate air-fuel mixture readings for improved engine performance and emissions control. This specific fit oxygen sensor is compatible with popular models such as the Toyota Corolla, Supra, Matrix, and Lexus GS300, GS430, LS430, SC300, SC430, as well as the Pontiac Vibe.

• Specific fit for select Lexus, Toyota, and Pontiac vehicles
• Heated narrow-band oxygen sensor for precise emissions monitoring
• Threaded mounting type with 18 mm thread diameter and 22 mm hex size
• Includes a 15.2-inch wiring harness with a 4-wire blade terminal connector
• Durable metal housing finished in steel for long-lasting use
• Connector features a rectangular male design with 4 terminals
• Overall length of 18.5 inches with 17.3 inches from sealing surface to connector end
• Standard replacement grade for reliable performance

About the Bosch Engineered Oxygen Sensor Line

The Bosch Engineered Oxygen Sensor line focuses on delivering precise and reliable sensors tailored to specific vehicle applications. The 13544 part number is part of this line, ensuring compatibility and performance for emission control systems in Lexus, Toyota, and Pontiac vehicles. These sensors are designed to meet OEM specifications, providing accurate feedback to the engine control unit for optimal combustion and reduced emissions.

Product Details and Specifications

This oxygen sensor features a narrow-band heated sensor type, which allows for faster warm-up times and more accurate air-fuel ratio readings. The sensor is threaded with an 18 mm diameter and includes a 22 mm hex size for easy installation and removal. The wiring harness is 15.2 inches long and includes four wires with blade terminals, housed in a rectangular male connector. The sensor’s metal housing finished in steel ensures durability under high-temperature conditions. The overall length of the sensor assembly is 18.5 inches, with 17.3 inches measured from the sealing surface to the end of the connector.

Common Applications and Issues Addressed

• Replacement for faulty or failing oxygen sensors in Lexus GS300, LS430, and SC430
• Restores proper air-fuel mixture readings in Toyota Corolla, Supra, and Matrix models
• Helps resolve engine performance issues such as rough idling and poor fuel economy
• Reduces emissions by ensuring accurate sensor feedback to the engine control unit
• Prevents check engine light triggers related to oxygen sensor faults

Installation Notes and Tips

When installing the Bosch Engineered Oxygen Sensor 13544, ensure the vehicle is cool to avoid burns. Use a 22 mm oxygen sensor socket for removal and installation. Verify the sensor’s wiring harness length and connector type match the vehicle’s factory specifications. The threaded mounting type requires proper torque to avoid leaks or damage. No mounting bracket is included, so use the existing mounting point on the exhaust system. Confirm the sensor orientation and connector alignment before securing the wiring harness.

Quality Assurance and Warranty

The Bosch Engineered Oxygen Sensor 13544 is manufactured to meet OEM standards for fit, form, and function. It undergoes rigorous testing to ensure durability and accurate sensor readings under various operating conditions. This oxygen sensor is a standard replacement grade part designed to maintain emission control system integrity. Warranty information is provided by Bosch and typically covers defects in materials and workmanship for a specified period; please refer to Bosch’s official warranty policy for details.