NTK 27071 Air / Fuel Ratio Sensor - Upstream

Direct Fit Air/Fuel Ratio Sensor

NTK Part Number 27071 is a direct fit heated air/fuel ratio sensor built for specific upstream applications. It is engineered for precise signal control and OE-style fitment on select Acura and Honda models, including Acura RDX, Acura TLX, and Honda Accord.

As part of NTK’s Direct Fit 5-Wire A/F Sensor line, this sensor is built for exact replacement use where the original equipment design calls for a 5-wire heated air/fuel ratio sensor. NTK applies ceramic sensor manufacturing expertise and OE application coverage to deliver consistent fit, form, and function for import and domestic vehicles.

Key Features

• Direct fit replacement air/fuel ratio sensor
• Heated sensor design for upstream placement
• 5-wire configuration
• Specific fit for confirmed vehicle applications
• 18.000 mm thread diameter with 0.38 thread length
• 13.7500 wiring harness length
• No mounting bracket included

Vehicle Fitment

• Fits 2021-2024 Acura RDX, upstream.
• Fits 2021-2024 Acura TLX, upstream.
• Fits 2021-2022 Honda Accord, upstream.
• Fits 2019-2020 Acura RDX, upstream, Bank 1 Sensor 1 oxygen sensor.
• Fits 2018-2020 Honda Accord, upstream, Bank 1 Sensor 1 oxygen sensor.

Detailed Description

NTK 27071 is a specific-fit upstream air/fuel ratio sensor for select Acura and Honda vehicles. Confirmed applications include 2021-2024 Acura RDX and TLX, plus 2021-2022 Honda Accord, with earlier coverage for 2019-2020 Acura RDX and 2018-2020 Honda Accord in Bank 1 Sensor 1 positions. If you are searching for an upstream air fuel ratio sensor for Honda Accord or an Acura RDX oxygen sensor replacement, this part number matches the listed OE-style applications.

NTK is known for OE sensor manufacturing and ceramic-based sensor technology, with production and testing processes focused on fit and signal reliability. Part Number 27071 cross-references 365316B2A01 for the same application.

Common Replacement Reasons

• Check engine light related to air/fuel ratio or oxygen sensor performance
• Rough idle or unstable fuel control from a failing upstream sensor
• Slow sensor response affecting engine management feedback
• Incorrect air/fuel readings on select Acura and Honda applications
• Need for a direct-fit replacement after sensor aging or contamination

Installation Notes

Install this sensor in the upstream location specified by the vehicle application. Verify connector style, thread diameter, and harness routing before installation. Use the listed fitment details for the exact year, make, model, and position, and confirm Bank 1 Sensor 1 coverage where noted for 2019-2020 Acura RDX and 2018-2020 Honda Accord.

Quality Assurance

NTK manufactures oxygen and air/fuel ratio sensors to OE specifications and tests them during production for quality and reliability. Part Number 27071 reflects NTK’s direct-fit sensor coverage for select Acura and Honda applications.