NTK 24066 Oxygen Sensor - Downstream

Direct-Fit Oxygen Sensor

NTK Oxygen Sensor 24066 is a specific-fit, heated oxygen sensor built for downstream applications. It uses a threaded mounting design with a 4-wire configuration and a 15-inch harness for a direct replacement on select Hyundai Sonata applications.

Key Features

• Heated oxygen sensor for faster operating response.
• Specific-fit design for direct replacement service.
• Threaded mounting with 18 mm thread diameter.
• 4-wire construction with 15-inch wiring harness.
• Engineered for downstream oxygen sensor applications.

Detailed Description

NTK part number 24066 is a direct-fit oxygen sensor from NTK, the Sensor Specialist and a major original equipment oxygen sensor supplier. Built with ceramic-based sensor technology and manufactured to OE-level standards, this sensor is intended for precise fit, form, and function in emissions control service. It is a threaded, heated sensor designed for downstream use on select Hyundai Sonata models, including 1993-1998 Hyundai Sonata downstream applications listed for B1S2 service. This part cross-references DENSO Auto Parts 234-4042 for the same application.

What It Is Used For

• Replacing a worn or slow-responding downstream oxygen sensor.
• Restoring proper air-fuel feedback for emissions system operation.
• Addressing oxygen sensor fault codes related to sensor performance.
• Correcting drivability issues tied to inaccurate exhaust gas readings.
• Servicing a direct-fit emissions component on Hyundai Sonata applications.

Installation Notes and Tips

Confirm the vehicle year, emissions package, and downstream B1S2 application before ordering. Match the threaded mounting style, 4-wire configuration, and harness length to the original sensor. Use the listed fitment for 1993-1998 Hyundai Sonata downstream applications, including California and Federal emissions variants where specified.

Quality Assurance

NTK tests these oxygen sensors during manufacturing to help ensure quality and reliability that meet or exceed OE specifications. Part number 24066 is backed by NTK's OE-focused engineering and application coverage.