HomeEmission Control > SensorsNTK 24657 Air / Fuel Ratio Sensor - Upstream, Upstream Left or Upstream Right
Part #: 24657

NTK 24657 Air / Fuel Ratio Sensor - Upstream, Upstream Left or Upstream Right

Direct Fit 4-Wire A/F Sensor, Upstream Left
⚙️ 21 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Direct Fit 4-Wire A/F Sensor, Upstream Left
🚗Fitment: Subaru and Toyota, Outback, Camry, RAV4, and Solara
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Overview of NTK Direct Fit 4-Wire A/F Sensor 24657

The NTK Direct Fit 4-Wire A/F Sensor 24657 is designed for precise air/fuel ratio monitoring in select Subaru and Toyota vehicles. This heated sensor ensures accurate emissions control and optimal engine performance for models like the Toyota Camry, RAV4, Solara, and Subaru Outback.

  • Heated 4-wire air/fuel ratio sensor for reliable operation
  • Specific fit for Subaru and Toyota models including Camry, Outback, RAV4, and Solara
  • Thread diameter of 18.0 mm and thread length of 0.38 inches for proper installation
  • Wiring harness length of 20.5 inches for convenient connection
  • Mounting bracket not included, designed for direct fit installation

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

The NTK Direct Fit 4-Wire A/F Sensor line focuses on providing vehicle-specific air/fuel ratio sensors that integrate seamlessly with the factory wiring and mounting points. This product line emphasizes compatibility and ease of installation, reducing the need for modifications. The 4-wire heated sensor design supports faster warm-up times and improved sensor response, which is critical for maintaining emissions compliance and engine efficiency.

Technical Description and Features

This air/fuel ratio sensor features a heated element and four wires, allowing it to reach operating temperature quickly and provide accurate readings under various driving conditions. The sensor’s thread diameter of 18.0 mm and thread length of 0.38 inches ensure a secure fit in the exhaust system. With a wiring harness length of 20.5 inches, the sensor can be connected without strain or the need for extensions. It is designed specifically for certain Subaru and Toyota models, including the Camry, Outback, RAV4, and Solara, ensuring compatibility and reliable performance.

Common Applications and Issues Addressed

  • Replacement for faulty or worn air/fuel ratio sensors in Subaru Outback and Toyota Camry
  • Helps resolve engine performance issues related to incorrect air/fuel mixture
  • Supports emissions 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 24657 sensor requires no mounting bracket as it is designed for direct fitment. Ensure the sensor threads match the exhaust port with an 18.0 mm diameter and 0.38 inch length. The 20.5-inch wiring harness length allows for straightforward connection to the vehicle’s existing wiring harness without modification. It is recommended to use anti-seize compound on the threads during installation to prevent damage and facilitate future removal.

Quality Assurance and Warranty

NTK sensors are manufactured to meet OEM specifications for fit, form, and function. The Direct Fit 4-Wire A/F Sensor 24657 undergoes rigorous testing to ensure durability and accurate sensor output. While specific warranty details are not provided here, NTK typically offers coverage against defects in materials and workmanship. Consult product documentation or the manufacturer for exact warranty terms.

BrandNTK
Part Number24657
PositionDirect Fit 4-Wire A/F Sensor, Upstream Left
Mounting Bracket IncludedNo
Sensor TypeHeated
Thread Diameter18.000
Thread Length0.38
Universal Or Specific FitSpecific
Wire Quantity4
Wiring Harness Length20.5

This part fits 21 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
2004SubaruOutback3.0LH6Upstream RightOE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit 4-Wire A/F Sensor
2004SubaruOutback3.0LH6Upstream LeftCompatible with downstream oxygen sensor designed to meet OE specifications.; Direct Fit 4-Wire A/F Sensor
2003SubaruOutback3.0LH6Upstream RightOE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit 4-Wire A/F Sensor
2003SubaruOutback3.0LH6Upstream LeftCompatible with downstream oxygen sensor designed to meet OE specifications.; Direct Fit 4-Wire A/F Sensor
2003ToyotaCamry2.4LL4UpstreamLocated in Manifold Before Warm-up (Front) Catalyst; B1S1; Federal Emissions; A/F Sensor; OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2003ToyotaRAV42.0LL4UpstreamCyls. 1 & 4; B1S1; OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2003ToyotaSolara2.4LL4UpstreamOE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit 4-Wire A/F Sensor
2002SubaruOutback3.0LH6Upstream RightOE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit 4-Wire A/F Sensor
2002SubaruOutback3.0LH6Upstream LeftCompatible with downstream oxygen sensor designed to meet OE specifications.; Direct Fit 4-Wire A/F Sensor
2002ToyotaCamry2.4LL4UpstreamOE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit 4-Wire A/F Sensor
2002ToyotaRAV42.0LL4UpstreamCyls. 1 & 4; B1S1; OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2002ToyotaSolara2.4LL4UpstreamOE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit 4-Wire A/F Sensor
2001SubaruOutback3.0LH6Upstream RightOE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit 4-Wire A/F Sensor
2001SubaruOutback3.0LH6Upstream LeftCompatible with downstream oxygen sensor designed to meet OE specifications.; Direct Fit 4-Wire A/F Sensor
2001ToyotaCamry2.2LL4GASUpstreamB1S1; Calif. Emissions; OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2001ToyotaCamry2.2LL4CNGUpstreamOE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit 4-Wire A/F Sensor
2001ToyotaRAV42.0LL4UpstreamCyls. 1 & 4; B1S1; OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2001ToyotaSolara2.2LL4UpstreamOE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit 4-Wire A/F Sensor
2000ToyotaCamry2.2LL4GASUpstreamB1S1; Calif. Emissions; OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2000ToyotaCamry2.2LL4CNGUpstreamOE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit 4-Wire A/F Sensor
2000ToyotaSolara2.2LL4UpstreamB1S1; Calif. Emissions; 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:

1373313990139931521715926213-284122641AA03C234-9010234-902375-232675-246775-247075-3497894673302089467330408946742010ES10930OS1510OS1531OS1605OS1942OS5109OS5118SG1188SG1863SG756SG777SG851

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