Denso 234-4324 Oxygen Sensor - Downstream

Denso OE Style Oxygen Sensor for Nissan Maxima

Denso 234-4324 is an OE-style heated oxygen sensor built for exact replacement and first-time fit. It is engineered for the downstream position on the 2000 Nissan Maxima, excluding California applications, with the connector, thread, and harness layout matched to the original design.

The Denso OE Style line focuses on direct-fit replacement parts that follow strict OE standards. This oxygen sensor uses Denso’s aluminum oxide trap layer to help protect the ceramic element from silicone and lead contamination, supporting stable engine operation and consistent fuel control.

Key Features

• Direct-fit oxygen sensor for the downstream location
• Fits 2000 Nissan Maxima, downstream, excluding California
• Heated sensor design for faster operating response
• Specific fit application with 4-wire configuration
• Male connector with threaded mounting type
• Wiring harness length: 21.38
• Thread diameter: 0.708
• Denso part number 234-4324

Detailed Description

This Denso oxygen sensor is designed for the 2000 Nissan Maxima downstream position and is built to OE-style dimensions for accurate replacement. The 4-wire heated design supports proper exhaust feedback once the sensor reaches operating temperature, helping the engine control system maintain the correct air-fuel mixture. If you are searching for a downstream oxygen sensor for a 2000 Nissan Maxima, Denso 234-4324 provides a direct-fit solution with the correct connector and threaded mount.

This part cross-references Bosch 13969 and NTK 24648 for the same application.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Incorrect fuel trim readings from a worn downstream sensor
• Reduced fuel efficiency caused by delayed sensor response
• Rougher engine operation tied to inaccurate exhaust feedback
• Replacement needs after sensor contamination or age-related wear

Installation Notes and Tips

Confirm the vehicle is a 2000 Nissan Maxima with the downstream sensor location and exclude California applications before ordering. Match the 4-wire connector, threaded mounting style, and harness length to the original sensor. For best results, inspect the exhaust bung threads and wiring routing before installation.

Quality Assurance

Denso manufactures and tests this OE Style oxygen sensor to strict original-equipment standards for fit and performance. The design emphasizes precise replacement dimensions and contamination resistance for dependable service life.