Denso 234-9111 Air / Fuel Ratio Sensor - Upstream or Upstream Left

Denso OE Style Air/Fuel Ratio Sensor

Denso 234-9111 is an OE Style heated air/fuel ratio sensor built for direct replacement on select Toyota and Lexus applications. It is engineered for specific fitment and uses a 4-wire design with a 7.09-inch wiring harness length for a precise connection.

For drivers searching for a Toyota Tundra upstream left air/fuel ratio sensor or a Toyota Tacoma upstream sensor replacement, this Denso part number 234-9111 is built to match the original application and mounting location.

Key Features

• OE Style replacement for direct-fit service
• Heated sensor design for faster operating readiness
• Specific fit application for accurate vehicle matching
• 4-wire configuration
• 7.09-inch wiring harness length
• Regular grade type for standard replacement service

Application Details

Denso manufactures and tests this sensor to OE-level standards, with precision-built components intended to match the original part dimensions and connector layout. The result is a replacement air/fuel ratio sensor that supports accurate exhaust feedback on the listed Toyota and Lexus vehicles, including Toyota Tundra, Toyota Tacoma, Toyota Sequoia, Toyota Land Cruiser, and Lexus LX570 applications.

This part cross-references NTK 24849 for the same application.

What It Helps Address

• Check engine light related to air/fuel ratio sensor faults
• Incorrect upstream sensor readings
• Rough idle caused by faulty exhaust feedback
• Fuel trim issues tied to a worn sensor
• Emissions test failures from sensor performance problems

Installation Notes

Install in the upstream left or upstream position only where listed in the fitment data. Verify connector style, harness length, and engine-side routing before installation. For best results, compare the original sensor location and part number against the vehicle application before replacement.

• Fits 2016 Toyota Tundra, Upstream Left
• Fits 2012-2015 Toyota Sequoia, Upstream Left
• Fits 2012-2015 Toyota Tundra, Upstream Left
• Fits 2012-2014 Toyota Tacoma, Upstream
• Fits 2011-2014 Toyota Tundra, Upstream
• Fits 2013 Lexus LX570, Upstream
• Fits 2013 Toyota Land Cruiser, Upstream

Quality Assurance

Denso OE Style parts are manufactured and tested to strict original-equipment standards for accurate replacement fit and dependable service. Part number 234-9111 is built as a direct replacement sensor for the listed applications.