NTK 25715 Oxygen Sensor - Downstream Left or Downstream Right

Direct Fit Oxygen Sensor

NTK 25715 is a direct fit oxygen sensor built for specific applications and engineered to match OE fit, form, and function. It uses a heated, threaded design with a 4-wire configuration and a 36.5-inch harness for a precise replacement on compatible Mercedes-Benz G550 applications.

• Heated oxygen sensor for accurate exhaust feedback
• Specific-fit design for direct replacement applications
• Threaded mounting with 18 mm thread diameter
• 36.5-inch wiring harness and 4-wire configuration

Fitment and Application

Fits 2009-2015 Mercedes-Benz G550, downstream right. Fits 2009-2015 Mercedes-Benz G550, downstream left. This NTK oxygen sensor 25715 is a direct fit replacement for downstream sensor locations on the Mercedes-Benz G550, with OE-equivalent design intended to match the original sensor layout.

NTK is part of the NGK family of products and is recognized for oxygen sensor coverage across import and domestic applications. The brand’s manufacturing focus on ceramic technology and OE-level application support is reflected in this sensor line, including NTK 25715.

What It Helps Address

• Check engine light concerns related to oxygen sensor performance
• Incorrect air-fuel ratio readings from a worn sensor
• Slow sensor response in heated exhaust monitoring systems
• Fitment issues caused by using a universal sensor instead of a specific-fit part

Installation Notes and Tips

Use the threaded mounting style and harness length to confirm routing before installation. Verify the downstream left or downstream right application and match the connector and wire count to the original sensor. For best results, compare the old sensor’s placement and thread size before replacing it with NTK 25715.

Quality Assurance

NTK oxygen sensors are extensively tested during manufacturing to help ensure quality and reliability that meet or exceed OE specifications. This part cross-references Bosch 16693 for the same application.