NTK 25599 Oxygen Sensor - Downstream Right

Direct Fit Oxygen Sensor

NTK 25599 is a direct fit heated oxygen sensor built for specific applications with a threaded mounting design and a 24-inch wiring harness. It is engineered for import and domestic emission control systems where accurate exhaust feedback is required.

Key Features

• Specific-fit oxygen sensor for direct replacement applications
• Heated sensor design for faster operating response
• 4-wire configuration with a 24-inch harness
• Threaded mounting with 18 mm thread diameter
• NTK 25599 is manufactured to meet or exceed OE specifications

Detailed Description

NTK 25599 belongs to NTK’s Direct Fit Oxygen Sensor line, a product range focused on application-specific replacement and broad coverage. As part of the NGK family of products, NTK applies ceramic sensor manufacturing expertise and extensive production testing to support fit, form, and function. This oxygen sensor is a threaded, heated design with a 4-wire layout, making it suitable for vehicles that require a direct replacement sensor with OE-style dimensions and connector layout. This part cross-references Bosch 15092 and Delphi ES10583 for the same application.

Compatible with Mercedes-Benz C280, C43 AMG, CLK320, and CLK430 applications listed below, this sensor is used in downstream exhaust monitoring on the specified vehicles. The NTK 25599 part number is also useful when matching the correct replacement by catalog reference.

What It Is Used For

• Replacing a failed oxygen sensor that triggers emissions-related fault codes
• Restoring exhaust feedback for fuel control and emissions monitoring
• Addressing slow sensor response or inaccurate voltage readings
• Correcting drivability issues tied to oxygen sensor performance
• Matching a direct-fit replacement for the specified Mercedes-Benz applications

Installation Notes and Tips

Fits 1998-2000 Mercedes-Benz C280, downstream right. Fits 1998-2000 Mercedes-Benz C43 AMG, downstream right. Fits 1998-2000 Mercedes-Benz CLK320, downstream right. Fits 1999-2000 Mercedes-Benz CLK430, downstream right. Confirm the original sensor connector, thread size, and harness length before installation. Use the vehicle’s service information to verify downstream right placement and sensor routing. The NTK 25599 part number should be matched to the application listing before replacement.

Quality Assurance

NTK states that these oxygen sensors are extensively tested during manufacturing to help ensure quality and reliability that meet or exceed OE specifications.