NGK 24452 Oxygen Sensor, 4-Wire Heated Downstream O2 Sensor, 18mm

The NGK (NTK) 24452 oxygen sensor, also called an O2 sensor or lambda sensor, is a direct-fit replacement. It is a heated, 4-wire sensor that mounts after the catalytic converter (downstream). It reads the oxygen content of the exhaust and sends that signal to the engine computer. The computer uses it to help keep the air-fuel ratio correct and to monitor catalytic converter efficiency.

Key Features:

• Direct-fit, heated 4-wire design
• Downstream position, after the catalytic converter
• 18mm thread size with threaded-in mounting
• Wire length of approximately 13.25 in.
• Ceramic sensing element with an integrated heater for fast light-off. This supports quicker closed-loop operation and lower cold-start emissions.
• Corrosion-resistant housing that protects the ceramic element from silicone and lead poisoning
• Porous PTFE filter that lets atmospheric oxygen in while keeping water and engine contaminants out
• Built to OE standards with close tolerances. Each sensor goes through a multi-step test process.

Cross-References: Replaces Toyota 8946512A00 and 8946521070; Bosch 13720, 15584 and 18018; Denso 234-4149, 234-4168 and 234-4557; Delphi ES20213; Spectra Premium OS5587; Standard Motor Products SG1715; CARQUEST 75-3067 and 75-3933.

NTK is NGK's sensor brand and a leading supplier of original-equipment oxygen sensors. A new sensor helps restore proper fuel control, supports emissions compliance, and helps prevent poor running and reduced fuel economy caused by a worn-out sensor.