Bosch 18138 Premium Oxygen Sensor Sensor - O2

The Bosch 18138 Premium Oxygen Sensor is a direct-fit replacement O2 sensor designed to restore optimal engine performance, fuel efficiency, and emissions control. This switching-type oxygen sensor uses a zirconia Nernst cell ceramic element to measure the oxygen content in exhaust gases, providing your engine's ECU with precise air-fuel mixture data for improved combustion and reduced emissions.

Key Features:

• Double laser-welded stainless steel body protects against contamination and is fully submersible for maximum durability
• Fast-acting heater optimizes sensor operation on Planar and 3, 4, and 5 wire Thimble type sensors, allowing the sensor to reach operating temperature within seconds
• True direct-fit OE type connectors and harnesses, along with gaskets or crush washers as necessary for installation
• Pre-coated threads with anti-seize compound right out of the box for easy installation
• 100% tested for full functionality to ensure every sensor meets Bosch's rigorous standards for quality and performance
• Heated sensor with 22mm hex size and threaded mounting
• Performance meets or exceeds OE specifications

Why Choose Bosch?

Bosch invented the oxygen sensor and began series production in 1976, and has since produced over 1 billion oxygen sensors. With decades of engineering expertise and manufacturing excellence, Bosch oxygen sensors deliver the precision and reliability that automotive manufacturers trust worldwide. A properly functioning oxygen sensor is essential for maintaining fuel economy, passing emissions tests, and ensuring your catalytic converter operates efficiently.

Technical Specifications:

• Sensor Type: Heated switching-type oxygen sensor
• Thread Diameter: 18mm
• Hex Size: 22mm
• Connector Gender: Male
• Wiring Harness: Included (665 inches)
• Housing Material: Stainless steel