Denso 234-9161 Air / Fuel Ratio Sensor - Upstream, Upstream Left or Upstream Right

Reliable Air/Fuel Ratio Sensor for Lexus and Toyota Vehicles

The Denso OE Style 234-9161 air/fuel ratio sensor is designed specifically for select Lexus and Toyota models. This heated sensor ensures accurate monitoring of the air-to-fuel mixture, helping maintain optimal engine performance and emissions control.

• Heated sensor type for faster response times
• Specific fit for Lexus and Toyota models including Avalon, Camry, and RAV4
• 13.78-inch wiring harness length for precise installation
• Four-wire configuration with male connector
• Thread diameter of 0.709 inches for secure mounting
• Regular grade type for standard OEM replacement

About the Denso OE Style Product Line

The OE Style line from Denso offers direct replacement parts engineered to meet original equipment specifications. The 234-9161 air/fuel ratio sensor is part of this line, providing a reliable and precise fit for specific Lexus and Toyota vehicles. This ensures compatibility and performance consistent with factory-installed components.

Detailed Product Description

This Denso air/fuel ratio sensor features a heated sensor element that allows for quicker activation and more accurate readings under various operating conditions. The 13.78-inch wiring harness length and four-wire design with a male connector facilitate straightforward integration with the vehicle’s existing wiring. The sensor’s thread diameter of 0.709 inches ensures a secure and proper fit in the exhaust system. Designed as a specific fit part, it is compatible with Lexus models such as RX350, RX450h, and ES350, as well as Toyota models including Camry, Highlander, Tacoma, and Yaris.

Common Applications and Issues Addressed

• Helps maintain proper air/fuel mixture for efficient combustion
• Reduces emissions by providing accurate sensor data to the engine control unit
• Prevents engine performance issues related to incorrect air/fuel ratios
• Addresses check engine light triggers related to sensor faults
• Improves fuel economy by ensuring optimal sensor operation

Installation Notes and Tips

When installing the Denso 234-9161 air/fuel ratio sensor, ensure the wiring harness is routed away from excessive heat sources and moving parts. Use the correct thread size of 0.709 inches to avoid cross-threading. Verify the male connector securely mates with the vehicle’s wiring harness. This sensor is designed for specific fitment, so confirm compatibility with your Lexus or Toyota model before installation.

Quality Assurance and Warranty

Denso manufactures this air/fuel ratio sensor to meet OEM standards, ensuring reliable performance and durability. The OE Style product line is engineered for consistent quality and fit. Warranty information is typically provided by the manufacturer or distributor; please refer to the original packaging or contact the supplier for specific warranty details.