Denso 234-5156 Air / Fuel Ratio Sensor - Upstream

Reliable Air/Fuel Ratio Sensor for Land Rover Vehicles

The Denso OE Style Air/Fuel Ratio Sensor 234-5156 is designed specifically for Land Rover models including Discovery, LR4, Range Rover, and Range Rover Sport. This heated sensor ensures accurate monitoring of the air-fuel mixture to optimize engine performance and emissions control.

• Heated sensor type for faster response times
• Specific fit for Land Rover Discovery, LR4, Range Rover, and Range Rover Sport
• 12.68-inch wiring harness length for precise installation
• Five-wire configuration with male connector for secure connection
• Thread diameter of 0.711 inches for proper fitment
• Regular grade type ensuring consistent performance

About the Denso OE Style Product Line

The OE Style line by Denso offers parts engineered to meet original equipment specifications. This ensures that the 234-5156 Air/Fuel Ratio Sensor matches the quality and fit of the factory-installed component, providing reliable operation and compatibility with your Land Rover vehicle’s emission control system.

Detailed Product Description

The Denso 234-5156 Air/Fuel Ratio Sensor is a heated sensor designed to provide accurate feedback on the air-to-fuel ratio in the engine’s exhaust system. With a 12.68-inch wiring harness and a five-wire setup, it connects securely via a male connector. The sensor’s thread diameter of 0.711 inches ensures a proper seal and fit in the exhaust manifold or pipe. This specific fit sensor is engineered for Land Rover Discovery, LR4, Range Rover, and Range Rover Sport models, maintaining emission standards and engine efficiency.

Common Issues Addressed by This Sensor

• Incorrect air/fuel mixture readings causing poor fuel economy
• Check engine light triggered by faulty sensor signals
• Increased emissions due to improper combustion
• Engine performance issues such as rough idling or hesitation
• Failed emissions tests related to sensor malfunction

Installation Notes and Tips

Ensure the vehicle is cool before installation to avoid burns. The 12.68-inch wiring harness length allows for straightforward routing without excessive tension. Confirm the male connector aligns properly with the vehicle’s wiring harness. Use the correct torque on the 0.711-inch thread diameter to prevent leaks or damage. This sensor is a direct replacement designed for specific Land Rover models, so no modifications are necessary.

Quality Assurance and Warranty

Denso’s OE Style sensors are manufactured to meet original equipment standards, ensuring durability and reliable performance. While specific warranty details for part number 234-5156 should be confirmed with the supplier, Denso products typically come with a limited warranty covering defects in materials and workmanship.