NTK 24375 Air / Fuel Ratio Sensor - Upstream Left or Upstream Right

Direct-Fit Air/Fuel Sensor

NTK 24375 is a direct-fit air/fuel ratio sensor for specific Mercedes-Benz applications. It uses a heated, 5-wire design and is built to match the original sensor configuration for accurate replacement service.

• Direct-fit replacement for specific import applications
• Heated 5-wire sensor design
• 18.000 mm thread diameter with 0.38 thread length
• 27.5 wiring harness length for proper routing
• Specific-fit design for OE-style installation

Fitment Details

Fits 2012-2016 Mercedes-Benz SLK55 AMG, upstream right. Fits 2012-2016 Mercedes-Benz SLK55 AMG, upstream left.

This part cross-references Bosch 17303 for the same application.

Product Overview

As part of NTK's Direct Fit 5-Wire A/F Sensor line, this sensor is engineered for applications that require the original connector style and sensor layout. NTK 24375 is designed to support OE-equivalent replacement on the Mercedes-Benz SLK55 AMG, with the fitment and wiring configuration matched to the vehicle's upstream sensor positions. The part number 24375 is also referenced by interchange numbers 234-5067 and 0085428518.

Common Replacement Issues

• Fault codes related to air/fuel mixture monitoring
• Rough idle or drivability concerns tied to sensor signal loss
• Failed emissions inspection from a worn upstream sensor
• Incorrect fuel trim readings caused by degraded sensor response

Installation Notes

Verify the upstream position and side before ordering. Confirm the 5-wire connector style, thread diameter, and harness length against the original sensor. This is a specific-fit sensor, so matching the application details is important for proper installation.

Quality Assurance

NTK is part of the NGK family of products and is a major original equipment oxygen sensor supplier. The sensor is extensively tested during manufacturing to help ensure quality and reliability that meet or exceed OE specifications.