Denso 234-4907 Oxygen Sensor - Downstream

Denso OE Style Oxygen Sensor 234-4907

Denso 234-4907 is an OE Style heated oxygen sensor built for direct replacement on select Subaru applications. It is engineered for exact fit and stable signal performance, with a threaded, specific-fit design for downstream use on 2013-2019 Subaru Legacy and Subaru Outback models.

The OE Style line focuses on factory-style replacement fitment and sensor construction. This Denso oxygen sensor uses a 4-wire, heated design with a male connector and a 7.56-inch wiring harness length, helping maintain proper exhaust feedback on the vehicles listed below.

Key Features

• OE Style replacement oxygen sensor for direct-fit service
• Heated sensor design for downstream exhaust monitoring
• Specific fit application with threaded mounting
• 4-wire configuration with male connector
• Thread diameter: 0.708 in.
• Wiring harness length: 7.56 in.
• Fits select 2013-2019 Subaru Legacy and Subaru Outback models

Product Details

Denso 234-4907 is built to OE standards for Subaru Legacy and Subaru Outback downstream oxygen sensor replacement. The sensor is designed for precise installation and consistent operation, and Denso’s OE Style construction includes an aluminum oxide trap layer that helps protect the ceramic element from silicone and lead contamination. This supports accurate exhaust readings, proper fuel control, and long service life in the listed Subaru applications. This part cross-references NTK 24651 for the same application.

What This Sensor Helps Address

• Check engine light related to downstream oxygen sensor faults
• Incorrect exhaust feedback readings
• Reduced fuel economy caused by a failing sensor
• Rough engine performance tied to sensor contamination or wear
• Emissions test failures caused by oxygen sensor malfunction

Installation Notes and Tips

• Fits 2018-2019 Subaru Legacy, downstream.
• Fits 2018-2019 Subaru Outback, downstream.
• Fits 2013-2017 Subaru Legacy, downstream.
• Fits 2013-2017 Subaru Outback, downstream.
• Verify connector style, wire count, and thread size before installation.
• Confirm downstream sensor location on the vehicle before ordering.

Quality Assurance

Denso manufactures and tests this oxygen sensor to OE standards for direct replacement use. The OE Style product line is built for first-time fitment and consistent sensor performance in the specified Subaru Legacy and Subaru Outback applications.