HomeEmission Control > SensorsNTK 24409 Oxygen Sensor - Downstream
Part #: 24409

NTK 24409 Oxygen Sensor - Downstream

Direct Fit Oxygen Sensor, Downstream
⚙️ 7 vehicles fit this part
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Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Direct Fit Oxygen Sensor, Downstream
🚗Fitment: Honda and Acura, Civic and RSX
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Overview of NTK Direct Fit Oxygen Sensor 24409

The NTK Direct Fit Oxygen Sensor 24409 is engineered specifically for Acura and Honda vehicles, including the Civic and RSX models. This heated oxygen sensor ensures precise air-fuel mixture readings to support optimal engine performance and emissions control.

  • Heated sensor type for faster response times
  • Specific fit for Acura and Honda Civic and RSX models
  • Threaded mounting type with 18mm thread diameter
  • Four-wire design for reliable signal transmission
  • 20-inch wiring harness length for straightforward installation

Detailed Product Description

This NTK oxygen sensor, part number 24409, belongs to the Direct Fit Oxygen Sensor line, designed to provide a direct replacement without modification. The heated sensor element allows the sensor to reach operating temperature quickly, improving fuel efficiency and reducing emissions. With a 20-inch wiring harness and four wires, it integrates seamlessly with the vehicle’s existing electrical system. The 18mm threaded mounting ensures a secure and proper fit in the exhaust system of Acura and Honda Civic and RSX models.

Applications and Problem Resolution

  • Helps correct engine misfires caused by inaccurate oxygen readings
  • Reduces rough idling and poor acceleration issues
  • Addresses increased fuel consumption due to faulty sensors
  • Supports emission system compliance by maintaining proper exhaust gas monitoring
  • Prevents check engine light triggers related to oxygen sensor faults

Installation Notes and Tips

Installation of the NTK 24409 oxygen sensor requires a threaded mounting hole with an 18mm diameter. The 20-inch wiring harness length provides sufficient reach for most Acura and Honda Civic and RSX exhaust configurations. Ensure the sensor connector matches the vehicle’s wiring harness to avoid electrical issues. Use appropriate tools to avoid damaging the sensor or threads during installation.

Quality Assurance and Warranty

NTK’s Direct Fit Oxygen Sensor line is manufactured to meet OEM specifications for fit, form, and function. This ensures reliable performance and durability under normal operating conditions. While specific warranty details are not provided here, NTK products typically come with a limited warranty covering defects in materials and workmanship.

BrandNTK
Part Number24409
PositionDirect Fit Oxygen Sensor, Downstream
Mounting TypeThreaded
Sensor TypeHeated
Thread Diameter18.000
Universal Or Specific FitSpecific
Wire Quantity4
Wiring Harness Length20.0000

This part fits 7 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2005HondaCivic2.0LL4DownstreamB1S2 oxygen sensor meets OEM standards.; Direct Fit Oxygen Sensor
2004AcuraRSX2.0LL4DownstreamB1S2 oxygen sensor meets OEM standards.; Direct Fit Oxygen Sensor
2004HondaCivic2.0LL4DownstreamB1S2 oxygen sensor meets OEM standards.; Direct Fit Oxygen Sensor
2003AcuraRSX2.0LL4DownstreamB1S2 oxygen sensor meets OEM standards.; Direct Fit Oxygen Sensor
2003HondaCivic2.0LL4DownstreamB1S2 oxygen sensor meets OEM standards.; Direct Fit Oxygen Sensor
2002AcuraRSX2.0LL4DownstreamB1S2 oxygen sensor meets OEM standards.; Direct Fit Oxygen Sensor
2002HondaCivic2.0LL4DownstreamB1S2 oxygen sensor meets OEM standards.; Direct Fit Oxygen Sensor

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

136761367715948234-4122234-436036532PNDA0136532PRBA0175-228475-2285ES20215OS1665OS1685SG911SG931

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.