Denso 234-8075 Oxygen Sensor - Downstream Left

Denso OE Style Oxygen Sensor 234-8075

Denso 234-8075 is an OE-style heated oxygen sensor built for direct replacement on select Toyota and Lexus applications. It is engineered for a specific fit, with a 4-wire design, male connector, threaded mounting, and a 10.75 in. wiring harness for a factory-style installation.

Key Features

• OE Style oxygen sensor for direct replacement fitment
• Heated sensor design for faster operating response
• Specific fit application with 4-wire configuration
• Male connector and threaded mounting type
• 10.75 in. wiring harness length
• Thread diameter: 0.709 in.

Product Details

Denso manufactures this oxygen sensor to OE standards for accurate replacement on the vehicles listed below. The sensor uses Denso’s aluminum oxide trap layer to help protect the ceramic element from silicone and lead contamination, supporting stable engine management and consistent fuel control. This part number, 234-8075, is a direct-fit option for drivers replacing a worn upstream or downstream sensor on Toyota and Lexus platforms, including Toyota Tundra, Toyota Sequoia, Toyota Land Cruiser, Lexus GX460, and Lexus LX570 applications.

This part cross-references Toyota (e.g., 894650c250) for the same application.

What This Sensor Helps Address

• Check engine light caused by oxygen sensor failure
• Incorrect air-fuel ratio readings
• Poor fuel economy from a degraded sensor signal
• Slow sensor response during closed-loop operation
• Emissions test failures related to sensor performance

Installation Notes

• Fits 2021-2023 Lexus GX460, downstream left.
• Fits 2018-2022 Toyota Sequoia, downstream left.
• Fits 2020-2021 Lexus LX570, downstream left.
• Fits 2020-2021 Toyota Land Cruiser, downstream left.
• Fits 2019-2021 Toyota Tundra, downstream left.
• Fits 2018 Toyota Tundra, downstream left.

Confirm connector style, thread size, and sensor position before installation. The specific-fit design is intended to match the original sensor location and wiring layout on the listed Toyota and Lexus vehicles. Denso 234-8075 is an OE-style replacement for service work where a direct-fit downstream left oxygen sensor is required.

Quality Assurance

Denso builds this oxygen sensor to strict OE standards and tests it for replacement accuracy and fit consistency. The OE-style construction and contamination-resistant sensor protection are designed to support reliable operation on the specified Toyota and Lexus applications.