NTK 24420 Oxygen Sensor - Downstream

Direct-Fit Oxygen Sensor

NTK Oxygen Sensor 24420 is a specific-fit, heated sensor built for direct replacement service. It is engineered with a threaded mounting design and a 4-wire configuration for dependable signal control in emission system service.

• Heated oxygen sensor for faster operating response.
• Specific-fit design for straightforward replacement.
• Threaded mounting type with 18 mm thread diameter.
• 15.75-inch wiring harness length for application-specific routing.
• NTK direct fit oxygen sensor line for import and domestic coverage.

Detailed Application Coverage

Fits 1998-2000 Honda Civic, downstream. This NTK 24420 oxygen sensor is built for the downstream position and matches the OEM-style application requirements for the Honda Civic. As part of NTK's Direct Fit Oxygen Sensor line, it is intended to streamline replacement selection while maintaining fit, form, and function.

This part cross-references Bosch 13249 and DENSO Auto Parts 234-4099 for the same application.

What It Helps Address

• Check engine light concerns related to oxygen sensor performance.
• Incorrect air-fuel ratio feedback from a worn sensor.
• Slow sensor response in emission control monitoring.
• Downstream sensor replacement needs on the exhaust system.

Installation Notes and Quality

Verify connector style, harness length, thread size, and downstream placement before installation. Use the vehicle's service information to confirm the correct sensor location and routing. NTK tests these oxygen sensors during manufacturing to support quality and reliability that meet or exceed OE specifications.

Quality Assurance

NTK is part of the NGK family of products and is recognized as a major original equipment oxygen sensor supplier. The brand uses ceramic-focused manufacturing technology and OE application support to maintain consistent product quality.