Denso 234-9051 Air / Fuel Ratio Sensor - Upstream, Upstream Left or Upstream Right

Reliable Air/Fuel Ratio Sensor for Lexus and Toyota Vehicles

The Denso OE Style Air/Fuel Ratio Sensor 234-9051 is designed specifically for select Lexus and Toyota models, ensuring precise air-fuel mixture readings. This heated sensor features a specific fit and a durable wiring harness, making it a dependable choice for emission control systems.

• Heated sensor type for faster response times
• Specific fit for Lexus and Toyota models including 4Runner, GS350, Tacoma, and more
• 8.66-inch wiring harness length for optimal installation
• Four-wire configuration with male connector
• Thread diameter of 0.711 inches for secure mounting
• Regular grade type for standard performance requirements

About the Denso OE Style Product Line

The OE Style line by Denso offers sensors engineered to meet original equipment specifications. This ensures compatibility and reliable performance comparable to factory-installed parts. The 234-9051 air/fuel ratio sensor maintains the quality and fit expected from Denso’s OE Style series, providing a direct replacement solution for emission control systems on Lexus and Toyota vehicles.

Detailed Product Description

The Denso 234-9051 air/fuel ratio sensor is a heated sensor designed to provide accurate readings of the air-to-fuel mixture in the exhaust system. Its specific fitment includes popular Lexus models such as the GS300, IS250, and LS460, as well as Toyota models like the Tacoma, Tundra, and Land Cruiser. The sensor’s 8.66-inch wiring harness length and four-wire design with a male connector facilitate straightforward installation and reliable electrical connections. The 0.711-inch thread diameter ensures a secure fit in the exhaust manifold or pipe, maintaining proper sensor positioning for optimal performance.

Common Applications and Issues Addressed

• Helps maintain proper engine air/fuel ratio for efficient combustion
• Reduces emissions by providing accurate data to the engine control unit
• Resolves check engine light triggers related to air/fuel sensor faults
• Improves fuel economy by optimizing fuel mixture adjustments
• Prevents rough idling and engine performance issues caused by faulty sensors

Installation Notes and Tips

When installing the Denso 234-9051 air/fuel ratio sensor, ensure the vehicle is cooled down to avoid burns. Use appropriate tools to remove the old sensor and avoid damaging the wiring harness. Verify the connector type matches the vehicle’s harness (male connector) and confirm the thread diameter fits securely. Follow torque specifications recommended by the vehicle manufacturer to prevent leaks or sensor damage.

Quality Assurance and Warranty

Denso’s OE Style air/fuel ratio sensor 234-9051 is manufactured to meet strict quality standards, ensuring reliable operation and durability. While specific warranty details may vary, Denso products typically come with a limited warranty covering defects in materials and workmanship. This sensor is engineered to provide consistent performance aligned with original equipment requirements for Lexus and Toyota vehicles.