HomeEmission Control > SensorsNTK 24392 Air / Fuel Ratio Sensor - Upstream
Part #: 24392

NTK 24392 Air / Fuel Ratio Sensor - Upstream

Direct Fit 5-Wire A/F Sensor, Upstream
⚙️ 3 vehicles fit this part
🔍
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$175.96Free Shipping
🚚Free ShippingNo Cost to Continental U.S.
🔄Free Returns*Wrong fit? No cost
🛡️60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
🔥
✅ In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
📦Direct Fit 5-Wire A/F Sensor, Upstream
🚗Fitment: Mazda, CX-7
🔄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 5-Wire A/F Sensor for Mazda CX-7

The NTK Direct Fit 5-Wire A/F Sensor 24392 is designed specifically for the Mazda CX-7 to provide accurate air/fuel ratio readings. This heated sensor ensures optimal engine performance and emission control by delivering precise data to the vehicle’s engine management system.

  • Heated sensor type for faster response times
  • 5-wire configuration for reliable signal transmission
  • Specific fitment for Mazda CX-7 models
  • 31.0-inch wiring harness length for easy installation
  • Thread diameter of 18.0 mm and thread length of 0.38 inches
  • No mounting bracket included

Details on the Direct Fit 5-Wire A/F Sensor Product Line

The NTK Direct Fit 5-Wire A/F Sensor line is engineered to provide precise air/fuel ratio measurements with a direct replacement design. This product line focuses on exact fitment and compatibility, reducing installation time and ensuring consistent sensor performance. The 5-wire heated sensor design supports quicker warm-up and accurate readings, which are critical for emission control and engine efficiency.

Product Description and Specifications

Part number 24392 is a heated air/fuel ratio sensor tailored for the Mazda CX-7. It features a 5-wire setup that enhances signal accuracy and durability. The sensor’s wiring harness length of 31.0 inches allows for convenient routing within the engine bay. With a thread diameter of 18.0 mm and a thread length of 0.38 inches, this sensor fits securely into the designated mounting location. Note that this sensor does not include a mounting bracket, so the existing bracket on the vehicle will be used during installation.

Common Applications and Issues Addressed

  • Helps maintain proper air/fuel mixture for efficient combustion
  • Reduces emissions by providing accurate sensor data to the ECU
  • Resolves engine performance issues related to faulty air/fuel ratio readings
  • Prevents check engine light triggers caused by sensor malfunctions
  • Supports smooth engine idling and acceleration response

Installation Notes and Tips

When installing the NTK 24392 sensor on a Mazda CX-7, ensure the wiring harness is routed away from high-heat areas to prevent damage. Use appropriate tools to avoid damaging the sensor threads during installation. Since no mounting bracket is included, verify the existing bracket is in good condition before securing the sensor. It is recommended to disconnect the vehicle battery before installation to avoid electrical issues.

Quality Assurance and Warranty

NTK sensors are manufactured to meet OEM specifications for fit and function. The Direct Fit 5-Wire A/F Sensor 24392 undergoes rigorous testing to ensure durability and reliable performance. While specific warranty details are not provided here, NTK typically offers coverage against manufacturing defects. Consult the product packaging or NTK documentation for exact warranty terms.

BrandNTK
Part Number24392
PositionDirect Fit 5-Wire A/F Sensor, Upstream
Mounting Bracket IncludedNo
Sensor TypeHeated
Thread Diameter18.000
Thread Length0.38
Universal Or Specific FitSpecific
Wire Quantity5
Wiring Harness Length31.0

This part fits 3 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2012MazdaCX-72.3LL4UpstreamBank 1 Sensor 1 Oxygen Sensor; Direct Fit 5-Wire A/F Sensor
2011MazdaCX-72.3LL4UpstreamBank 1 Sensor 1 Oxygen Sensor; Direct Fit 5-Wire A/F Sensor
2010MazdaCX-72.3LL4UpstreamBank 1 Sensor 1 Oxygen Sensor; Direct Fit 5-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:

15782234-5012L3BT188G1A

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