NTK 24423 Oxygen Sensor - Downstream

Direct Fit Oxygen Sensor for Honda Civic

NTK 24423 is a direct fit heated oxygen sensor for the downstream position on select 2001-2005 Honda Civic models. It is built for specific-fit replacement and uses a 4-wire, threaded design with a 23.5-inch wiring harness for OE-style routing and connection.

Key Features

• Direct fit oxygen sensor for downstream placement
• Heated sensor design for faster operating response
• Specific fit application for select Honda Civic models
• 4-wire configuration with 23.5-inch wiring harness
• 18 mm thread diameter with threaded mounting type
• OE-style replacement engineered for import and domestic applications

Product Details

NTK 24423 is part of the Direct Fit Oxygen Sensor line, which focuses on application-specific replacement sensors built to match original equipment fit, form, and function. NTK uses ceramic manufacturing expertise and production controls from raw material through finished sensor construction, supporting consistent sensor performance for emissions system service. This part cross-references Bosch 15408 for the same application. For 2001-2005 Honda Civic downstream service, NTK 24423 provides a direct replacement option that aligns with the vehicle’s original sensor location and connector-style requirements.

Common Issues This Sensor Can Address

• Check engine light related to oxygen sensor performance
• Fault codes tied to downstream oxygen sensor readings
• Emissions test failures caused by a worn sensor
• Slow or inaccurate exhaust oxygen feedback
• Replacement needs after sensor aging or contamination

Installation Notes and Tips

Fits 2001-2005 Honda Civic, downstream, located after the secondary catalyst. Confirm the connector routing, harness length, and threaded mounting location before installation. Use the vehicle’s original application details to verify the downstream B1S3 position and ensure the sensor is matched to the correct exhaust location. NTK 24423 is a specific-fit replacement, so it should be installed in the designated position for the listed Honda Civic applications.

Quality Assurance

NTK manufactures oxygen sensors to meet or exceed OE specifications and tests them during production for quality and reliability. As the Sensor Specialist and a major original equipment oxygen sensor supplier, NTK supports import and domestic emissions applications with OE-focused replacement coverage.