Delphi ES20410 Oxygen Sensor - Rear or Rear Left

Delphi ES20410 Oxygen Sensor Overview

Delphi ES20410 is a heated oxygen sensor built for rear and rear left applications on select Lexus and Toyota vehicles. It combines OE-based engineering with a 4-wire design, square connector, and 18 x 1.5 mm thread size for direct replacement service on listed applications.

Built from Delphi’s OE heritage and aftermarket experience, this oxygen sensor supports accurate exhaust feedback on vehicles such as the Toyota Prius, Lexus CT200h, and Lexus RX450h. Use Delphi ES20410 when replacing a rear oxygen sensor on the exact application shown in the fitment list.

Key Features

• Heated oxygen sensor for faster operating response
• 4-wire configuration
• Square connector shape
• 18 x 1.5 mm thread size
• Overall length: 600.0
• Package contents: oxygen sensor and instruction sheet
• Positions: rear, rear left

Detailed Description

The Delphi ES20410 oxygen sensor is engineered for select rear exhaust locations on 2010-2014 Lexus and Toyota models. It is listed for applications including the 2010-2013 Toyota Prius rear, 2011-2013 Toyota Highlander rear left, 2011-2013 Lexus CT200h rear, and 2012-2013 Lexus RX450h rear left. Additional coverage includes the 2012-2013 Toyota Prius Plug-In rear, 2012-2013 Toyota Prius V rear, and 2014 model-year rear applications where noted.

Delphi draws on more than a century of OE experience and supplier knowledge used by major automakers, and that background is reflected in the design and application matching of ES20410. This part cross-references Bosch 18039 and DENSO Auto Parts 234-4400 for the same application.

What This Sensor Helps Address

• Check engine light related to rear oxygen sensor performance
• Incorrect exhaust oxygen feedback readings
• Fuel control issues caused by a failing heated sensor
• Emissions test failures tied to sensor response problems
• Driveability concerns from degraded exhaust monitoring

Installation Notes and Tips

Confirm the position before ordering, since ES20410 is listed for rear and rear left locations depending on vehicle and build date. Match the connector shape, wire count, and thread size to the original sensor before installation. Review the application tab for exact fitment on your Lexus CT200h, Lexus RX450h, or Toyota Prius application, especially where notes specify build-date limits such as “to 12/2013” or “Japan built.”

Quality Assurance

Delphi uses OE heritage and supplier experience in the design of its aftermarket parts, with application-specific engineering intended to meet the requirements of listed vehicles. Delphi ES20410 is a direct-fit replacement oxygen sensor for the confirmed applications shown above.