HomeEmission Control > SensorsNTK 24665 Air / Fuel Ratio Sensor - Upstream
Part #: 24665

NTK 24665 Air / Fuel Ratio Sensor - Upstream

Direct Fit 4-Wire A/F Sensor, Upstream
23 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
Direct Fit 4-Wire A/F Sensor, Upstream
Fitment: Honda and Acura, Civic, RSX, and CR-V
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 4-Wire A/F Sensor 24665

The NTK Direct Fit 4-Wire A/F Sensor 24665 is designed specifically for select Acura and Honda models, including the Civic, CR-V, and RSX. This heated air/fuel ratio sensor ensures precise monitoring of the air-fuel mixture to support optimal engine performance and emissions control.

  • Heated sensor type for faster response times
  • Specific fit for Acura and Honda Civic, CR-V, RSX models
  • 4-wire configuration for accurate signal transmission
  • Thread diameter of 18.000 mm and thread length of 0.38 inches
  • Wiring harness length of 13.8 inches for direct installation
  • No mounting bracket included

About the Direct Fit 4-Wire A/F Sensor Product Line

The Direct Fit 4-Wire A/F Sensor line by NTK is engineered to provide a precise replacement solution for vehicles requiring a heated air/fuel ratio sensor with a 4-wire setup. This product line focuses on exact fitment and reliable sensor performance, minimizing installation complexity and ensuring compatibility with specific vehicle models such as Acura and Honda. The 24665 part number is part of this line, offering a direct replacement that matches OEM specifications.

Detailed Product Description

This NTK air/fuel ratio sensor features a heated sensor element that allows it to reach operating temperature quickly, improving the accuracy of air-fuel mixture readings. The 4-wire design supports both the sensor signal and heater circuit, which is essential for maintaining sensor function under various engine conditions. With a wiring harness length of 13.8 inches, the sensor is designed for straightforward installation without the need for extensions or modifications. The thread diameter of 18.000 mm and thread length of 0.38 inches ensure a secure and proper fit in the exhaust system of compatible Acura and Honda vehicles.

Common Applications and Issues Addressed

  • Replacement for faulty or failing air/fuel ratio sensors in Acura Civic, CR-V, and RSX
  • Helps resolve engine performance issues related to incorrect air-fuel mixture readings
  • Supports emission control system compliance by providing accurate sensor data
  • Addresses check engine light triggers related to sensor malfunction
  • Improves fuel efficiency by enabling precise fuel mixture adjustments

Installation Notes and Tips

Installation of the NTK 24665 sensor requires no mounting bracket as it is designed for direct fitment. Ensure the sensor threads match the exhaust port and avoid cross-threading during installation. The 13.8-inch wiring harness length allows for easy connection to the vehicle’s existing wiring without additional adapters. It is recommended to use anti-seize compound on the threads to facilitate future removal. Always verify compatibility with your specific Acura or Honda model before installation.

Quality Assurance and Warranty

NTK sensors are manufactured to meet strict quality standards and OEM specifications. The Direct Fit 4-Wire A/F Sensor 24665 undergoes rigorous testing to ensure durability and reliable performance under normal operating conditions. While specific warranty details are not provided here, NTK typically offers coverage against manufacturing defects. Consult the product documentation or supplier for exact warranty terms.

BrandNTK
Part Number24665
PositionDirect Fit 4-Wire A/F Sensor, Upstream
Mounting Bracket IncludedNo
Sensor TypeHeated
Thread Diameter18.000
Thread Length0.38
Universal Or Specific FitSpecific
Wire Quantity4
Wiring Harness Length13.8

This part fits 23 vehicles. Search below:

YearMakeModelSubmodelTransmissionLitersCylindersPositionNotes
2005HondaCivic2.0LL4UpstreamOE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit 4-Wire A/F Sensor
2005HondaCivic1.7LL4UpstreamLocated in Manifold; B1S1; OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2005HondaCivic1.7LL4UpstreamOE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit 4-Wire A/F Sensor
2005HondaCivic1.3LL4UpstreamOE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit 4-Wire A/F Sensor
2004AcuraRSXType-S2.0LL4UpstreamOE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit 4-Wire A/F Sensor
2004AcuraRSXBaseManual2.0LL4UpstreamOE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit 4-Wire A/F Sensor
2004HondaCivic2.0LL4UpstreamOE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit 4-Wire A/F Sensor
2004HondaCivic1.7LL4UpstreamLocated in Manifold; B1S1; OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2004HondaCivic1.7LL4UpstreamOE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit 4-Wire A/F Sensor
2004HondaCivic1.3LL4UpstreamOE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit 4-Wire A/F Sensor
2004HondaCR-V2.4LL4UpstreamOE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit 4-Wire A/F Sensor
2003AcuraRSXType-S2.0LL4UpstreamOE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit 4-Wire A/F Sensor
2003AcuraRSXBaseManual2.0LL4UpstreamOE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit 4-Wire A/F Sensor
2003HondaCivic2.0LL4UpstreamOE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit 4-Wire A/F Sensor
2003HondaCivic1.7LL4UpstreamLocated in Manifold; B1S1; OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2003HondaCivic1.3LL4UpstreamOE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit 4-Wire A/F Sensor
2003HondaCR-V2.4LL4UpstreamOE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit 4-Wire A/F Sensor
2002AcuraRSXType-S2.0LL4UpstreamOE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit 4-Wire A/F Sensor
2002AcuraRSXBaseManual2.0LL4UpstreamOE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit 4-Wire A/F Sensor
2002HondaCivic2.0LL4UpstreamOE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit 4-Wire A/F Sensor
2002HondaCivic1.7LL4UpstreamLocated in Manifold; B1S1; OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2002HondaCR-V2.4LL4UpstreamOE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit 4-Wire A/F Sensor
2001HondaCivic1.7LL4UpstreamLocated in Manifold; B1S1; OE Equivalent Design; Direct Fit 4-Wire A/F 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:

13680137051370615002153971539915472213-2852213-2890234-9004234-900536531PLE30536531PLM30636531PNDA1136531PPA30536531PRBA0136531PZAA0136531PZAL0175-228775-230575-230675-261475-261675-297375-3412ES10937OS1663OS1674OS1693OS2024OS2194OS5104OS5277SG1361SG1845SG566SG909SG920SG939

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