NGK Oxygen Sensor

1999–2004 Jeep Grand Cherokee, 2002–2010 Dodge Ram

23532

Overview:

The NGK Oxygen Sensor is a direct-fit replacement designed to maintain optimal engine performance and fuel efficiency for select Dodge Ram and Jeep Grand Cherokee models. As a critical component of the vehicle’s on-board diagnostic system, this sensor continuously monitors the oxygen levels in the exhaust gases, providing real-time feedback to the engine control unit (ECU). This feedback helps regulate the air-fuel mixture, ensuring efficient combustion, reducing emissions, and alerting the system to potential issues with fuel delivery or catalytic converter function.

Manufactured by NTK, the world’s largest OEM oxygen sensor supplier, this sensor is engineered to meet or exceed original equipment specifications. It is ideal for vehicle owners and technicians seeking a reliable, high-quality replacement part that supports long-term engine health and compliance with emissions standards.

Key Features:

NGK’s oxygen sensor incorporates advanced technology and design features to deliver dependable performance and durability:

• Direct-fit design for easy installation on 1999–2004 Jeep Grand Cherokee and 2002–2010 Dodge Ram models
• Advanced ceramic sensor element with a 3-stage contaminant-resistant plasma jet and deposit trap overcoat to protect against sensor poisoning
• Provides precise closed-loop feedback to the ECU for accurate air-fuel ratio control
• Enhances fuel efficiency by optimizing combustion based on real-time oxygen level data
• Supports on-board diagnostic (OBDII) systems by detecting fuel system and catalytic converter issues
• Manufactured using state-of-the-art ceramic technology for consistent sensor performance and longevity
• OE application technology developed in collaboration with original equipment manufacturers
• Improved resistance to failure and contamination compared to standard sensors

Construction & Design:

At its core, the NGK Oxygen Sensor features a high-quality ceramic sensing element, expertly engineered to withstand harsh exhaust environments. The sensor’s ceramic element is protected by a proprietary 3-stage plasma jet and deposit trap overcoat, which guards against contamination from fuel additives, oil, and other exhaust byproducts that can degrade sensor accuracy over time.

NTK’s expertise as a ceramics manufacturer ensures tight control over the entire production process—from raw materials to finished product—resulting in a sensor that delivers consistent, reliable readings and a long service life. The robust construction also helps maintain sensor responsiveness and reduces the risk of premature failure, even under demanding driving conditions.

Installation & Fitment:

This NGK Oxygen Sensor is designed as a direct replacement for the following vehicles, requiring no modifications for installation:

• Jeep Grand Cherokee (1999–2004)
• Dodge Ram 1500 SLT and ST (2002–2010)

Installation typically involves removing the old sensor and threading the NGK sensor into the exhaust manifold or pipe using standard hand tools. Its direct-fit design ensures proper fit and connector compatibility, allowing for a straightforward, hassle-free replacement process.

What's Included:

• One NGK direct-fit oxygen sensor (Part #23532)
• Pre-installed wiring harness and connector for seamless integration
• Installation instructions (where applicable)

Ideal For:

This oxygen sensor is ideal for vehicle owners, mechanics, and automotive enthusiasts who require a reliable, OEM-quality replacement sensor for their Dodge Ram or Jeep Grand Cherokee. It is particularly suited for those focused on maintaining engine efficiency, reducing emissions, and ensuring accurate OBDII diagnostics. Whether restoring a vehicle to factory condition or replacing a failing sensor, this NGK product offers trusted performance and durability.

NGK is one of the most trusted names in ignition, supplying spark plugs, coils, and related ignition/sensor components used across both OEM and aftermarket applications. For performance enthusiasts, NGK’s plug technology and broad coverage make it a reliable baseline upgrade for consistent spark, cleaner burn, and dependable operation under heat and boost.