NTK 27026 Air / Fuel Ratio Sensor - Upstream, Upstream Left or Upstream Right

Direct Fit Air/Fuel Ratio Sensor for Mitsubishi

NTK 27026 is a direct fit, heated 5-wire air/fuel ratio sensor built for specific Mitsubishi upstream applications. It is engineered for accurate exhaust feedback, stable signal response, and OE-style fitment on select Outlander PHEV, Outlander, Mirage, Mirage G4, Outlander Sport, and RVR models.

Key Features

• Direct fit 5-wire air/fuel ratio sensor for specific applications
• Heated sensor design for faster operating temperature
• 23.5 in. wiring harness length
• 18.000 mm thread diameter with 0.38 in. thread length
• Specific fit configuration for upstream placement
• No mounting bracket included

NTK Direct Fit Sensor Line

NTK’s Direct Fit 5-Wire A/F Sensor line is built for OE-style replacement where exact connector, harness, and sensor configuration matter. As part of NTK’s oxygen sensor and air/fuel ratio sensor coverage, this line focuses on proper fit, form, and function for import and domestic vehicles, including Mitsubishi upstream sensor applications.

Detailed Description

NTK part number 27026 is an upstream air/fuel ratio sensor for select Mitsubishi models, including the 2018-2022 Mitsubishi Outlander PHEV, 2017-2020 Mitsubishi Outlander, 2017-2018 Mitsubishi Mirage, 2017-2018 Mitsubishi Mirage G4, 2014-2016 Mitsubishi Outlander, 2014-2016 Mitsubishi Outlander Sport, and 2014-2016 Mitsubishi RVR. This sensor uses a heated 5-wire design and a specific-fit configuration to match the original application requirements. NTK manufactures oxygen sensors with controlled ceramic technology and extensive production testing to support OE-level fit and signal consistency. This part cross-references DENSO Auto Parts 234-5180 for the same application.

Common Issues This Sensor Can Address

• Check engine light related to upstream air/fuel ratio sensor performance
• Incorrect fuel trim readings from a worn or slow-responding sensor
• Rough idle or hesitation caused by inaccurate exhaust feedback
• Reduced fuel economy from improper air/fuel mixture control
• Failed emissions inspection tied to sensor fault codes

Installation Notes and Tips

Verify the vehicle’s original sensor position before ordering, since this part is listed for upstream, upstream left, and upstream right locations depending on model and year. Confirm connector style, harness routing, and thread specifications before installation. Use proper oxygen sensor service tools and follow the manufacturer’s torque and wiring procedures to avoid damage during replacement.

Quality Assurance

NTK tests these sensors during manufacturing to help ensure quality and reliability that meet or exceed OE specifications. The brand’s OE-focused sensor expertise and controlled ceramic manufacturing process support consistent performance for Mitsubishi Outlander, Mirage, Mirage G4, Outlander Sport, and RVR applications. Part number 27026 is built for direct replacement use in the listed fitments.