Denso 234-9008 Air / Fuel Ratio Sensor - Upstream or Upstream Left

OE Style Air/Fuel Ratio Sensor

Denso 234-9008 is an OE Style heated air/fuel ratio sensor built for precise replacement and direct fitment on select Toyota, Lexus, and Pontiac applications. It is engineered for upstream locations and uses a 4-wire, male-connector design with a specific-fit harness for accurate installation.

Key Features

• OE Style replacement for factory-style sensor fit and function
• Heated sensor design for faster operating temperature
• Specific fit application for direct replacement use
• 4-wire configuration with male connector
• Wiring harness length: 18.03 in.
• Thread diameter: 0.711 in.
• Built to strict OE standards for replacement accuracy

Fitment Details

• Fits 2009-2013 Toyota Matrix, Upstream
• Fits 2009-2012 Toyota Corolla, Upstream
• Fits 2008-2011 Lexus ES350, Upstream Left
• Fits 2008-2011 Toyota Avalon, Upstream Left
• Fits 2008-2011 Toyota Camry, Upstream Left
• Fits 2011 Toyota Sienna, Upstream Left
• Fits 2009-2011 Toyota Venza, Upstream Left
• Fits 2009-2010 Pontiac Vibe, Upstream
• Fits 2008-2010 Toyota Highlander, Upstream Left
• Fits 2008-2009 Lexus RX350, Upstream Left
• Fits 2007 Lexus RX350, Upstream Left; fits Japan-built vehicles

Detailed Description

Denso 234-9008 is an air/fuel ratio sensor designed as an OE-style replacement for upstream monitoring on select Toyota, Lexus, and Pontiac vehicles. The sensor is precision-built and tested to OE standards to support accurate air-fuel feedback, stable engine management, and proper emissions system operation. This part cross-references Bosch 15960 and NTK 24662 for the same application.

Common search applications include a Toyota Corolla upstream air/fuel ratio sensor replacement, a Toyota Camry upstream left sensor, and a Lexus ES350 upstream left sensor. The Denso 234-9008 also serves select Toyota Matrix, Avalon, Highlander, Venza, Sienna, and Lexus RX350 applications.

What It Helps Address

• Check engine light related to upstream air/fuel ratio sensor faults
• Incorrect fuel trim readings from a worn sensor
• Rough idle or drivability issues tied to mixture feedback
• Emissions test failures caused by sensor response problems
• Slow sensor warm-up from a failing heated element

Installation Notes

Verify the vehicle year, make, model, and sensor position before ordering. This is a specific-fit sensor for upstream or upstream-left locations, so match the connector style, wire count, and thread size to the original part. For best results, inspect the harness routing and connector condition during replacement.

Quality Assurance

Denso manufactures and tests this OE Style sensor to strict original-equipment standards for replacement accuracy and first-time fit. The Denso 234-9008 is built to deliver the correct part and fit for the listed applications.