NTK 24171 Oxygen Sensor - Downstream Right

Direct-Fit Oxygen Sensor

NTK 24171 is a direct-fit heated oxygen sensor built for specific applications and threaded mounting. It is engineered for accurate exhaust monitoring and OE-style fit, form, and function in compatible Acura NSX applications.

As part of NTK’s Direct Fit Oxygen Sensor line, this sensor reflects the brand’s focus on streamlined coverage and OE application technology. NTK is recognized for oxygen sensor manufacturing and uses controlled ceramic technology from raw material through finished production.

Key Features

• Heated oxygen sensor design for faster operating readiness.
• Specific-fit construction for direct replacement use.
• 4-wire configuration with threaded mounting.
• 18.19 wiring harness length for application-specific routing.
• 18.000 thread diameter for the listed fitment.

Detailed Description

NTK 24171 is an emission control oxygen sensor intended for downstream right placement on select Acura NSX models. It is a direct-fit replacement that matches the listed application requirements and supports accurate exhaust feedback for the engine management system. This part cross-references Honda 3653258GA01 for the same application.

For buyers searching for an Acura NSX oxygen sensor, downstream right oxygen sensor, or NTK 24171 replacement, this part provides a specific-fit solution rather than a universal sensor. The NTK Direct Fit Oxygen Sensor line is built around OE-style application coverage and manufacturing controls that support consistent fit and function.

What It Is Used For

• Replacing a worn or failed downstream oxygen sensor.
• Restoring exhaust gas monitoring accuracy.
• Addressing check engine light conditions tied to sensor performance.
• Correcting drivability issues caused by inaccurate air-fuel feedback.
• Maintaining proper emissions system operation.

Installation Notes and Tips

Verify the connector, thread size, wire count, and downstream right position before installation. Use the vehicle’s service information to confirm the exact application for the Acura NSX. Because this is a specific-fit sensor, compare the existing sensor layout and harness routing to the listed specifications before replacement.

Quality Assurance

NTK states that its oxygen sensors are extensively tested during manufacturing to meet or exceed OE specifications. The brand is part of the NGK family of products and is a major original equipment oxygen sensor supplier.