NTK 22001 Oxygen Sensor - Downstream or Upstream

Direct Fit Oxygen Sensor

NTK 22001 is a direct fit oxygen sensor built for specific applications and engineered for threaded installation. It uses a heated, 4-wire design with a 32-inch harness and an 18 mm thread diameter for a precise replacement profile.

Key Features

• Direct fit oxygen sensor for specific applications
• Heated sensor design for faster operating response
• 4-wire configuration with 32-inch wiring harness
• Threaded mounting type with 18 mm thread diameter
• NTK 22001 part number for easy identification

Detailed Description

NTK 22001 is part of the Direct Fit Oxygen Sensor line from NTK, a brand known for OE-focused sensor coverage. As an oxygen sensor for emission control systems, it is built to match the fit, form, and function expected in replacement service. The heated design and specific-fit construction make it a practical choice for restoring sensor performance in applications such as the Mazda Miata, Mazda Protege, Kia Sephia, and Mazda MX-3. This part number, 22001, is also useful when cross-checking replacement options and service references.

What It Is Used For

• Replacing a worn or slow-responding oxygen sensor
• Addressing check engine light concerns related to sensor performance
• Restoring air-fuel feedback for emission control operation
• Correcting drivability issues tied to inaccurate exhaust oxygen readings

Installation Notes and Tips

Verify the connector style, wire count, thread diameter, and harness length before installation. Confirm the sensor position and application notes for the vehicle, since this part is listed for both upstream and downstream locations across different models. Use the fitment data to match the exact year, make, model, and position before ordering.

Quality Assurance

NTK states that these oxygen sensors are extensively tested during manufacturing to meet or exceed OE specifications. The brand also draws on its role as a major original equipment oxygen sensor supplier, with manufacturing control from raw material to finished product.