Bosch 18256 Premium OE Fitment Oxygen Sensor

The Bosch 18256 is a premium original equipment-type oxygen sensor featuring a 4-wire heated design with thread-in mounting style and an included wiring harness for direct installation. As the inventor of the automotive oxygen sensor, Bosch remains the top choice of carmakers around the world, bringing decades of engineering expertise to every component.

Key Features:

• Benefits from technological and manufacturing experience gained since inventing the oxygen sensor in the late 1960s
• 100% factory tested for full functionality to ensure operation within design specifications
• Stainless steel body is totally submersible and sealed tight to protect against exhaust emissions damage
• Fast-acting heater reaches operating temperature within seconds for optimum performance
• True direct-fit OE connectors and threads pre-coated with anti-seize compound for hassle-free installation
• 4-wire configuration with integrated wiring harness

Properly functioning oxygen sensors are crucial for your vehicle's fuel economy and reducing harmful exhaust emissions. The vehicle's engine control unit uses the O2 sensor to regulate air-fuel mixture by checking the oxygen content in exhaust gases, helping maintain the ideal 14.7:1 air-fuel ratio for complete combustion. A defective oxygen sensor can cause your catalytic converter to fail prematurely, making timely replacement an important preventive measure.

This sensor replaces OEM part number 8946504450 and is designed for precision fitment and long-lasting performance you can count on.