Denso 234-4137 Oxygen Sensor - Downstream

Denso OE Style Oxygen Sensor 234-4137

Denso 234-4137 is a heated, specific-fit oxygen sensor built for direct replacement in select Toyota and Lexus applications. It is engineered for downstream use on 1997-2003 Camry, Solara, ES300, and LS400 models, with OE-style fitment for accurate sensor response and dependable exhaust monitoring.

Key Features

• Heated oxygen sensor for faster operating temperature and stable signal output
• Specific-fit design for direct replacement on listed applications
• Threaded mounting type with 0.708 in. thread diameter
• 4-wire configuration with male connector
• 28.74 in. wiring harness length for application-specific routing
• OE Style construction for factory-like fit and function

OE Style Design and Construction

Denso’s OE Style line focuses on exact replacement fitment and consistent sensor performance. The 234-4137 oxygen sensor uses precision-built components to match the original application, helping maintain proper exhaust feedback for the engine control system. Denso also uses an aluminum oxide trap layer to help protect the ceramic element from silicone and lead contamination, supporting long service life in demanding exhaust conditions. This makes it a practical choice for drivers searching for a downstream oxygen sensor for 1997-2001 Toyota Camry, 1999-2003 Toyota Solara, 1997-2001 Lexus ES300, or 1998-2000 Lexus LS400.

This part cross-references Bosch 13353 and NTK 24808 for the same application.

What This Oxygen Sensor Helps Address

• Check engine light concerns related to downstream oxygen sensor performance
• Incorrect exhaust feedback affecting fuel control
• Reduced fuel economy caused by a worn sensor
• Slow or inconsistent sensor response after extended use
• Fitment issues from universal sensors or incorrect connector style

Installation Notes and Tips

Verify the downstream location before installation and confirm connector style, thread diameter, and harness length against the original sensor. Because this is a specific-fit threaded sensor, proper routing and secure connector engagement are important for reliable operation. For best results, inspect the exhaust threads and wiring path before installing the replacement sensor.

Quality Assurance

Denso manufactures and tests this oxygen sensor to OE standards for replacement accuracy and consistent performance. The 234-4137 is built to deliver the right fit for the listed Toyota and Lexus applications, including 1997-2003 Toyota Camry and 1997-2001 Lexus ES300 downstream sensor positions.