Bosch 18125 Premium Oxygen Sensor Sensor - O2

The Bosch 18125 Premium Oxygen Sensor is a direct-fit replacement designed to monitor oxygen levels in your vehicle's exhaust gases and optimize engine performance. This heated narrow-band oxygen sensor uses a zirconia Nernst cell ceramic element to measure oxygen content and provide real-time data to the engine control unit (ECU), enabling precise fuel adjustments for improved efficiency and reduced emissions.

Key Features:

• 100% factory tested at 1,000 degrees Celsius to ensure quality and performance
• Double laser-welded stainless steel body - fully submersible and sealed tight against contamination
• Fast-acting heater element reaches operating temperature within seconds for optimal performance
• Direct-fit OE connector and wiring harness included for hassle-free installation
• Threads pre-coated with anti-seize compound right out of the box
• 4-wire heated sensor with female rectangular connector and 22mm hex size

Bosch invented the automotive oxygen sensor in the late 1960s and remains the world's leading supplier and OE manufacturer. A properly functioning oxygen sensor is essential for maintaining optimal air-fuel mixture, maximizing catalytic converter efficiency, and preventing potential engine damage. Replace your worn oxygen sensor if you experience poor fuel economy, rough idle, failed emissions tests, or check engine light codes such as P0131, P0132, P0133, P0134, P0135, P0141, P0420, or P0430.