Denso 234-2011 Oxygen Sensor - Downstream

Denso OE Style Oxygen Sensor for Lexus LS400

The Denso 234-2011 is a specific-fit, downstream oxygen sensor built for 1993-1994 Lexus LS400 applications. It is engineered to OE standards for accurate replacement fitment, stable sensor performance, and dependable engine management feedback.

For Lexus LS400 owners searching for a downstream oxygen sensor replacement, this OE Style part number 234-2011 provides the correct threaded mounting, 2-wire configuration, and male connector layout for a direct-fit service part.

Key Features

• OE Style replacement oxygen sensor for exact-fit service
• Specific fit for 1993-1994 Lexus LS400, downstream
• Non-heated sensor design
• 17.80-inch wiring harness length
• 2-wire construction with male connector
• Threaded mounting with 0.708-inch thread diameter
• Built to Denso OE standards for replacement accuracy

Product Details

Denso OE Style oxygen sensors are manufactured and tested to strict original-equipment standards, with precision-built components intended to match the factory part form and function. The 234-2011 uses Denso’s aluminum oxide trap layer to help protect the ceramic element from silicone and lead contamination, supporting consistent exhaust feedback and long service life. This part cross-references Toyota 8946550050 for the same application.

Compatible With 1993-1994 Lexus LS400, downstream. The 234-2011 is a practical choice when replacing a worn sensor on the Lexus LS400 and when restoring proper oxygen-sensor signal response in the exhaust system.

Common Replacement Reasons

• Check engine light related to oxygen sensor performance
• Slow or inaccurate exhaust oxygen readings
• Reduced fuel economy from a failing downstream sensor
• Rougher engine operation caused by aging emissions components
• Corrosion or connector wear at the original sensor

Installation Notes

Verify the downstream location and connector style before installation. Match the 2-wire, male-connector configuration and threaded mounting dimensions to the original sensor on the vehicle. Because this is a specific-fit part, confirm the application against the vehicle’s year and model before service. Use proper exhaust-sensor removal practices to avoid damage to the exhaust bung or wiring harness.

Quality Assurance

Denso manufactures this OE Style oxygen sensor to original-equipment standards and tests each component for replacement accuracy and first-time fit. The design focuses on dependable sensor response, contamination resistance, and consistent performance in the intended Lexus LS400 application.