NGK 23566 NTK Oxygen Sensor - Heated Narrow Band O2 Sensor, M18x1.5

The NGK NTK 23566 oxygen sensor (also called an O2 sensor or air-fuel ratio sensor) is a direct-fit, OE-type replacement. It monitors exhaust gas oxygen content and sends feedback to the engine control unit. The ECU uses that signal to regulate the air-fuel mixture, which supports fuel efficiency, engine performance and lower emissions.

Key Features:

• Heated, narrow band design with a zirconia sensing element and ceramic heater
• The heater brings the sensor up to operating temperature quickly, for faster closed-loop activation and lower cold-start emissions
• Thread size M18 x 1.5 mm, screw-on mounting, 7/8 in. wrench size
• Wire length of 475 mm (18.75 in.) with a factory-style OE connector (pin terminal)
• Wiring harness included; no grommet
• Corrosion-resistant housing that helps protect the ceramic element from silicone and lead poisoning
• Platinum-coated element, tested during manufacturing for quality and durability
• Meets or exceeds emission standards

Cross-references: Bosch 15122, Delphi ES20181, DENSO 234-4880, Spectra Premium OS5457, CARQUEST 75-3675, Chrysler 56029085AA.

NTK is a leading original equipment supplier of oxygen sensors. The OE-specified connector and hardware make installation straightforward and help the sensor work correctly with the vehicle's on-board diagnostic system. NGK backs this part with a limited 1-year warranty.