NGK 24548 Oxygen Sensor, 4-Wire Heated Narrow Band, 18mm Thread

The NGK 24548 oxygen sensor (also called an O2 sensor or NTK oxygen sensor) is a direct-fit, heated, narrow band replacement. It monitors the oxygen content of the exhaust and sends that signal to the engine computer. The computer uses it to adjust the air/fuel ratio, which supports efficient combustion, good fuel economy and lower emissions.

Key Features:

• Heated, narrow band sensor with a 0-1 V signal range
• 4-wire design with a square female connector and blade terminals
• Threaded mounting with an M18-1.5 thread and 7/8 in. wrench size
• Sensor wire length of about 13.75 in. (350 mm)
• Wiring harness included, with an OE-specified water-resistant connector
• Ceramic sensing element with an integrated heater, so it reaches operating temperature quickly for faster closed-loop operation
• Contaminant-resistant plasma jet and deposit trap overcoat helps protect the element from poisoning
• Dual-coated platinum interface for fast response and durability
• No flange; oxygen sensor bung not included
• Made in the USA

Cross-references: Replaces Standard Motor Products SG471, SG542, SG547, SG656 and SG792; BWD OS627, OS987, OS1231, OS1546 and OS1996; and Delphi ES10662 and ES20060.

A failing oxygen sensor can trigger the check-engine light and cause poor fuel economy or rough running. A new sensor helps restore proper fuel control and emissions performance. NGK develops it with vibration and thermal shock testing to meet OE-level fit, form and function.