Denso 234-9047 Air / Fuel Ratio Sensor - Upstream or Upstream Rear

Denso OE Style Air/Fuel Ratio Sensor

Denso 234-9047 is an OE Style heated air/fuel ratio sensor built for exact replacement and first-time fit. It is made to the same strict standards used for original equipment testing, with a specific-fit design for direct service on select Subaru, Toyota, and Lexus applications.

The OE Style line focuses on replacement parts that match factory fit and function, making this sensor a practical choice for drivers servicing an upstream sensor on a Subaru Legacy, Subaru Outback, or Toyota Camry. The Denso 234-9047 also cross-references ACDelco 213-2847 for the same application.

Key Features

• Heated air/fuel ratio sensor for precise exhaust feedback
• Specific fit design for direct replacement service
• 4-wire configuration with male connector
• Wiring harness length: 7.87
• Thread diameter: 0.711
• OE Style construction for factory-style fit and function

Detailed Description

This Denso air/fuel ratio sensor is engineered for upstream and upstream rear locations where accurate mixture monitoring is critical. It is a heated sensor with a 4-wire layout, a male connector, and a specific-fit design that supports direct replacement on listed vehicles. Applications include 2008-2009 Subaru Legacy upstream, 2005-2009 Subaru Outback upstream, 2008-2009 Subaru Tribeca upstream, 2006-2007 Subaru B9 Tribeca upstream, 2002-2006 Toyota Camry upstream rear, 2003-2004 Toyota 4Runner upstream, and 2002-2003 Lexus ES300 upstream rear.

For buyers searching for a Denso 234-9047 air/fuel ratio sensor for Subaru Legacy upstream or Toyota Camry upstream rear service, this OE Style part is built to match the original installation profile and electrical layout. It is also listed with interchange references including ACDelco 213-2847, Bosch 13737, and NTK 24663.

What It Helps Address

• Check engine light related to air/fuel ratio sensor faults
• Rough idle caused by inaccurate exhaust feedback
• Fuel trim issues from a slow or failing upstream sensor
• Emissions test failures tied to sensor performance
• Poor drivability from incorrect mixture monitoring

Installation Notes and Tips

Confirm the sensor position before ordering, since this part is listed for upstream and upstream rear locations only. Match the connector style, wire count, and thread diameter to the original sensor before installation. For best results, inspect the harness routing and connector condition during replacement, and verify the application against the vehicle’s engine and emissions configuration.

Quality Assurance

Denso manufactures and tests this OE Style sensor to strict original-equipment standards for replacement accuracy and consistent fit. The precision-built design supports direct installation on the listed applications, including Subaru, Toyota, and Lexus models.