NGK 25692 Heated Narrow-Band Oxygen Sensor, 4-Wire, M18x1.5, 36.5in

The NGK (NTK) 25692 oxygen sensor, also called an O2 sensor or lambda sensor, is a heated, 4-wire, narrow-band (switching) sensor. It is a direct-fit replacement made to OE specifications. It monitors the oxygen content of the exhaust and reports to the engine control unit (ECU) whether the engine is running rich or lean. The ECU uses this to keep the air/fuel ratio near 14.7:1, which supports fuel efficiency and lower tailpipe emissions.

Key Features:

• Sensor type: Narrow-band (switching), heated
• Wiring: 4 wires with a rectangular female connector, 36.5 in harness length
• Threads: M18 x 1.5 metric, 18 mm thread diameter
• Wrench size: 7/8 in (22 mm) hex
• Sensor element: Advanced ceramic element with a dual-coated platinum interface for fast light-off and response
• Contaminant protection: 3-stage plasma jet and deposit trap overcoat helps guard against element poisoning
• Connector: OE-specified water-resistant connector and harness hardware for easy installation
• Testing: OE-grade development includes vibration and thermal shock testing
• Included: Oxygen sensor and installation instructions

Replacing a worn oxygen sensor helps restore proper fuel control, steady engine performance and emissions compliance. NGK/NTK is a leading OE supplier of oxygen sensors.