NTK 27056 Air / Fuel Ratio Sensor - Upstream

Direct-Fit Air/Fuel Ratio Sensor

NTK 27056 is a direct-fit heated air/fuel ratio sensor for specific Volkswagen and Audi applications. It is built for upstream Bank 1 Sensor 1 service and uses a 5-wire design for precise signal control.

Compatible with Volkswagen GTI, Jetta, Golf Alltrack, Golf R, Golf SportWagen, and Golf models, plus Audi A3 applications listed below. The NTK 27056 follows OE-style fit, form, and function for a straightforward replacement on the specified vehicles.

Key Features

• Direct-fit design for specific applications
• Heated sensor construction for faster operating response
• 5-wire configuration for air/fuel ratio monitoring
• Upstream Bank 1 Sensor 1 placement
• NTK 27056 part number for accurate ordering

Detailed Description

NTK 27056 is an emission control sensor engineered for precise air/fuel ratio feedback on select Volkswagen and Audi models. As a direct-fit replacement, it matches the specified OE application and is intended for upstream installation where accurate mixture monitoring is critical to engine management. The 18 mm thread diameter and 27.5-inch harness length support the listed fitment, while the heated design helps the sensor reach operating temperature efficiently.

NTK’s Direct Fit 5-Wire A/F Sensor line focuses on application-specific coverage and OE-style integration. This part cross-references Volkswagen Group 06K906262C for the same application. Use NTK 27056 when replacing the original sensor on compatible Volkswagen GTI, Jetta, and Golf variants, as well as the Audi A3 applications shown in the fitment table.

What It Is Used For

• Replacing a failed upstream air/fuel ratio sensor
• Restoring accurate fuel mixture feedback to the engine control system
• Addressing sensor-related fault codes or drivability concerns
• Correcting slow sensor response or unstable signal output
• Supporting emissions system performance on the listed vehicles

Installation Notes and Tips

Verify the connector, thread size, and upstream Bank 1 Sensor 1 location before installation. The mounting bracket is not included. Confirm the vehicle application against the fitment data for the exact Volkswagen or Audi model and year before ordering.

Quality Assurance

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