NTK 24374 Air / Fuel Ratio Sensor - Upstream Left or Upstream Right

Direct-Fit Air/Fuel Ratio Sensor

NTK 24374 is a specific-fit air/fuel ratio sensor for Mercedes-Benz applications that require a heated 5-wire design. It is built for direct replacement use and follows OE-style fit, form, and function for accurate sensor response.

Key Features

• Heated air/fuel ratio sensor with a 5-wire configuration
• Specific-fit design for direct replacement applications
• 18.8-inch wiring harness length for application matching
• 18 mm thread diameter with 0.38 thread length
• NTK 24374 is tested during manufacturing for quality and reliability

Detailed Description

NTK 24374 is part of the Direct Fit 5-Wire A/F Sensor line, engineered for import and domestic coverage with OE application technology. NTK draws on its ceramics and sensor manufacturing expertise to control the sensing element from raw material through finished production, helping maintain consistent fit and function. This part cross-references Bosch 17288 and DENSO Auto Parts 234-5066 for the same application.

Compatible With 2012-2013 Mercedes-Benz CLS550, Upstream Right; 2012-2013 Mercedes-Benz CLS550, Upstream Left; 2012-2013 Mercedes-Benz CLS63 AMG, Upstream Right; 2012-2013 Mercedes-Benz CLS63 AMG, Upstream Left; 2012-2013 Mercedes-Benz E63 AMG, Upstream Right; 2012-2013 Mercedes-Benz E63 AMG, Upstream Left; 2012 Mercedes-Benz E550, Upstream Right; 2012 Mercedes-Benz E550, Upstream Left.

What It Is Used For

• Replacing a worn or slow-responding air/fuel ratio sensor
• Restoring proper sensor feedback for engine management
• Addressing fault codes related to mixture monitoring
• Correcting drivability issues tied to inaccurate exhaust sensing

Installation Notes and Tips

Verify the connector style, thread size, and harness length before installation. Confirm the exact upstream position and bank assignment for the vehicle listed in the fitment data. The sensor is specific fit, so it should be matched to the application by part number and position.

Quality Assurance

NTK states that its oxygen sensors are extensively tested during manufacturing to meet or exceed OE specifications. The brand is part of NGK and is recognized as a major original equipment sensor supplier.