NGK 25180 Oxygen Sensor O2 Sensor 4-Wire 18mm Thread-In

The NGK 25180 oxygen sensor (also called an O2 sensor or air-fuel ratio sensor) is an OE-grade replacement. It gives the engine computer constant feedback on exhaust oxygen content. The ECU uses that feedback to keep the air-fuel ratio in closed loop. This helps maintain engine performance and fuel efficiency and reduces harmful emissions. The sensor also helps the OBDII system detect fuel delivery or catalytic converter efficiency problems.

Key Features:

• 4-wire design with a thread-in mounting style
• 18mm thread diameter
• Wiring harness included; oxygen sensor bung not included
• Dual-coated platinum element for durability and fast response
• Integrated heater brings the ceramic sensing element to operating temperature quickly. This allows earlier closed-loop activation and lower cold-start emissions.
• Corrosion-resistant housing protects the element from silicone and lead poisoning
• Porous PTFE filter lets atmospheric oxygen in while keeping water and engine contaminants out
• OE-specified water-resistant connector and attaching hardware for easy plug-in installation
• Tested during manufacturing for quality and reliability

Cross-References: OEM 39210-37510, 39210-37530. Also replaces Bosch 15651 and 15654, Denso 234-4191, Delphi ES10883, Standard Motor Products SG1500 and SG1503, Spectra Premium OS5351, and CARQUEST 75-3120 and 75-3123.

The 25180 is built to OE standards and installs like the original sensor. It is a dependable choice for restoring emissions performance and passing smog checks.