Denso 234-8073 Oxygen Sensor - Downstream Left or Downstream Right

OE Style Oxygen Sensor

This Denso oxygen sensor is built as a specific-fit replacement for select Lexus and Toyota applications. It uses a heated, threaded design with a 4-wire male connector for a direct-fit installation and accurate exhaust monitoring.

Key Features

• OE Style replacement engineered for exact fit and first-time installation
• Heated sensor design for faster operating response
• Aluminum oxide trap layer helps protect the ceramic element from silicone and lead contamination
• Specific-fit construction with threaded mounting
• 10.75-inch wiring harness length and 4-wire male connector

Detailed Description

Denso 234-8073 is an OE Style oxygen sensor manufactured to strict original-equipment standards. The sensor is precision built for direct replacement use and features Denso’s aluminum oxide trap layer, which helps shield the sensing element from contamination that can affect exhaust feedback and engine operation. This part number, 234-8073, is a fitment-specific solution for downstream applications on select Lexus ES350 and Toyota Camry and Avalon models.

For buyers searching for a Toyota Camry oxygen sensor or a Lexus ES350 downstream oxygen sensor, this part provides the correct connector style, thread size, and harness length for the listed applications. The Denso 234-8073 is also a strong match for drivers replacing an aging sensor that has triggered emissions-related faults or reduced fuel control accuracy.

What It Is Used For

• Restoring accurate exhaust oxygen feedback
• Addressing emissions warning lights tied to sensor failure
• Correcting fuel mixture control issues caused by a worn sensor
• Replacing a contaminated or slow-responding downstream sensor

Installation Notes and Tips

Compatible With the listed Lexus and Toyota applications only. Verify the downstream left or downstream right position, connector style, and thread diameter before installation. The threaded mounting design requires proper sensor removal and installation procedures to avoid damage to the exhaust bung or wiring harness.

Quality Assurance

Denso manufactures and tests this oxygen sensor to OE standards for exact replacement fit and consistent performance. The OE Style line focuses on direct-fit replacement parts built to match original specifications.