NGK 25589 NTK Oxygen Sensor O2 Sensor Heated 4-Wire 18mm Thread

The NGK 25589 NTK oxygen sensor (also called an O2 sensor or lambda sensor) is a heated, direct-fit replacement sensor. It monitors the oxygen content of the exhaust and sends constant closed-loop feedback to the engine control unit (ECU). The ECU uses that signal to regulate the air-fuel ratio, which supports fuel economy, emissions control and engine performance.

Key Features:

• Narrow band, heated oxygen sensor with 4 wires
• Threaded mounting with an 18mm (M18-1.5) thread and 7/8 in. wrench size
• Wire length of 620mm (24.5 in.)
• OE-type connector and attaching hardware for easy installation
• Dual-coated platinum element for fast light-off and response times
• Advanced ceramic sensing element with an integrated heater that reaches operating temperature quickly, for faster closed-loop activation and lower cold-start emissions
• Corrosion-resistant housing protects the ceramic element from silicone and lead poisoning
• Porous PTFE filter lets atmospheric oxygen in while keeping water and engine contaminants out

Cross-References: OE 078906265M; Bosch 16023, 16073, 16287; Delphi ES20160, ES20164; DENSO 234-4812; ACDelco 213-3084; BWD OS2096; Spectra Premium OS5025; Standard Motor Products SG1210; CARQUEST 75-2750.

NTK is a leading OEM supplier of oxygen sensors. The 25589 is built to OE standards, so it helps restore proper fuel control and emissions performance when an original sensor is worn or fouled.