NTK 24409 Oxygen Sensor - Downstream

Direct Fit Oxygen Sensor for Honda and Acura

NTK 24409 is a direct fit heated oxygen sensor built for specific downstream applications on select Honda Civic and Acura RSX models. It is engineered to match OE-style fit, form, and function for accurate exhaust monitoring in the intended application.

Key Features

• Direct fit, specific application oxygen sensor
• Heated sensor design for faster operating readiness
• 4-wire configuration with 20-inch wiring harness length
• Threaded mounting with 18 mm thread diameter
• Built to meet or exceed OE specifications during manufacturing validation

Product Details

NTK Direct Fit Oxygen Sensor 24409 is part of the NTK sensor line, a product family focused on OE-style coverage for import and domestic vehicles. NTK controls ceramic sensor production from raw material through finished component, supporting consistent construction and application accuracy. This downstream sensor is listed for 2002-2005 Honda Civic, downstream, and 2002-2004 Acura RSX, downstream, including B1S2 oxygen sensor applications that meet OEM standards. This part cross-references Bosch 13676 for the same application.

Common Issues This Sensor Can Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel ratio feedback from a worn downstream sensor
• Emissions test failures tied to sensor response or signal quality
• Reduced catalyst monitoring accuracy in the exhaust system
• Driveability concerns caused by degraded exhaust sensor output

Installation Notes and Tips

Verify the vehicle year, make, model, and downstream position before installation. Confirm the connector, wire count, and threaded mounting style match the original sensor on your Honda Civic or Acura RSX. Use the OE application location and routing to avoid strain on the 20-inch harness and ensure the sensor is installed in the correct exhaust position.

Quality Assurance

NTK manufactures oxygen sensors with extensive production testing to support quality and reliability that meet or exceed OE specifications. As the Sensor Specialist and a major OE oxygen sensor supplier, NTK focuses on application-specific coverage for import and domestic vehicles.