NTK 24618 Oxygen Sensor

Direct Fit Oxygen Sensor for Nissan and Infiniti

NTK Direct Fit Oxygen Sensor 24618 is a heated, specific-fit replacement built for select Nissan and Infiniti applications from 2001-2004. It is designed for threaded mounting with a 3-wire layout and a 19.75-inch wiring harness for OE-style serviceability.

As part of the NTK Direct Fit Oxygen Sensor line, this sensor is engineered for import and domestic coverage with OE application technology and manufacturing control from raw ceramic material through finished sensor. NTK uses extensive testing during production to help ensure fit, form, and function that meet or exceed OE specifications.

Key Features

• NTK part number 24618
• Heated oxygen sensor for faster operating response
• Specific fit design for direct replacement service
• 3-wire configuration with threaded mounting
• 19.75-inch wiring harness length
• 18 mm thread diameter
• Fits select Infiniti I35, QX4, and G20 applications, plus Nissan Altima, Maxima, Frontier, Xterra, Pathfinder, and Sentra

Detailed Description

NTK 24618 is a direct fit oxygen sensor for vehicles that require OE-style sensor placement and connector configuration. It is listed for upstream positions across select 2001-2004 Infiniti and Nissan models, including 2002-2004 Nissan Frontier upstream, 2002-2004 Nissan Xterra upstream, and 2002-2004 Infiniti I35 upstream right and upstream left applications. This part number also covers select 2001-2004 Nissan Altima and 2002-2003 Nissan Maxima upstream positions, along with 2001-2002 Nissan Pathfinder and 2001 Nissan Sentra upstream applications.

This part cross-references Bosch 13968 and DENSO Auto Parts 234-3113 for the same application.

What This Sensor Helps Address

• Check engine light concerns related to oxygen sensor performance
• Incorrect air-fuel ratio readings at upstream sensor locations
• Rough idle or drivability issues tied to sensor signal degradation
• Emissions test failures caused by a worn or slow-responding sensor
• OE-style replacement needs for Nissan and Infiniti upstream sensor locations

Installation Notes and Tips

Verify the connector, wire count, thread diameter, and sensor position before installation. This NTK oxygen sensor is a specific-fit, threaded unit, so matching the vehicle year, make, model, and upstream location is essential. Confirm whether the application calls for upstream right, upstream left, upstream front, or upstream rear placement before ordering.

For best results, compare the original sensor routing and harness length to the replacement part before installation. Use the vehicle fitment listing to confirm coverage for 2001-2004 Infiniti I35, QX4, and G20, as well as Nissan Altima, Maxima, Frontier, Xterra, Pathfinder, and Sentra applications.

Quality Assurance

NTK is the Sensor Specialist within the NGK family of products and is a major original equipment oxygen sensor manufacturer. NTK oxygen sensors are extensively tested during manufacturing to support reliable operation and OE-level application coverage.