Delphi ES20194 Oxygen Sensor

Delphi ES20194 Oxygen Sensor Overview

The Delphi ES20194 is a heated oxygen sensor built for precise exhaust monitoring in a wide range of Lexus and Toyota applications. It uses a 4-wire design, square connector shape, and 18 x 1.5 mm thread size to match the specified OE-style fitment requirements.

Backed by Delphi’s OE heritage and more than 100 years of supplier experience, this oxygen sensor is built with the application knowledge needed for dependable replacement on vehicles such as the Toyota Land Cruiser, Toyota Tundra, and Lexus LS430.

Key Features

• Heated oxygen sensor for faster operating temperature and stable signal output
• 4-wire configuration for the listed vehicle applications
• Square connector shape for direct-fit style connection
• 18 x 1.5 mm thread size for proper exhaust bung fitment
• Overall length of 275.0 for application-specific routing
• Includes oxygen sensor and instruction sheet
• Fits front, front left, front right, rear, rear left, and rear right positions depending on vehicle application

Detailed Description

Delphi ES20194 is an emission control oxygen sensor engineered for vehicles that require accurate air-fuel feedback from the exhaust stream. It is a strong match for long-tail searches such as Toyota Land Cruiser rear right oxygen sensor, Lexus LS430 front left O2 sensor, and Toyota Tundra front oxygen sensor replacement. This part cross-references Bosch 13441 for the same application.

Confirmed fitment includes 1995-2000 Lexus LS400 front, 2000-2004 Toyota Tundra front left and front right, 2001-2004 Toyota Sequoia front left and front right, 2003-2004 Lexus GX470 front, 2008-2015 Lexus LS600h rear left, and 2010-2012 Toyota 4Runner rear right. It also covers additional Lexus and Toyota positions listed in the application data, including Lexus LX470, Lexus LX570, Toyota Land Cruiser, Toyota FJ Cruiser, and Lexus SC430.

What This Sensor Helps Address

• Check engine light related to oxygen sensor performance
• Incorrect fuel trim readings from a worn exhaust sensor
• Rough idle or drivability issues tied to exhaust feedback errors
• Failed emissions inspection caused by sensor response problems
• Slow sensor switching from age, heat, or contamination

Installation Notes and Tips

Verify the exact position on your vehicle before ordering, since this part is listed for multiple front and rear locations. Confirm connector shape, wire count, and thread size against the original sensor before installation. Use the application tab to match the correct side and position for your Lexus or Toyota model, including Toyota Land Cruiser, Toyota Tundra, and Lexus LS430 applications.

Quality Assurance

Delphi builds this oxygen sensor using OE experience and supplier knowledge developed over a century of working with major automakers. That OE-based background supports consistent fitment and application-specific performance for the listed vehicles.