Denso 234-5174 Air / Fuel Ratio Sensor - Upstream or Upstream Left

Reliable Air/Fuel Ratio Sensor for Ford and Lincoln Vehicles

The Denso OE Style 234-5174 air/fuel ratio sensor is designed specifically for select Ford and Lincoln models, including the Escape, Expedition, F-150, GT, and Navigator. This heated sensor ensures accurate monitoring of the air-fuel mixture to support optimal engine performance and emissions control.

• Heated sensor type for faster response times
• Specific fit for Ford and Lincoln vehicles
• 19.80-inch wiring harness length for precise installation
• Five-wire configuration with male connector
• Thread diameter of 0.708 inches for secure mounting
• Regular grade type for standard durability

About the Denso OE Style Product Line

The OE Style line from Denso offers replacement parts engineered to meet original equipment specifications. The 234-5174 air/fuel ratio sensor maintains the quality and fitment standards expected from factory components, providing a reliable solution for emission control systems in compatible Ford and Lincoln models.

Detailed Product Description

This air/fuel ratio sensor features a heated element to quickly reach operating temperature, improving sensor response and reducing emissions during cold starts. The 19.80-inch wiring harness length allows for proper routing and connection within the engine bay. With five wires and a male connector, this sensor integrates seamlessly with the vehicle’s existing wiring harness. The 0.708-inch thread diameter ensures a secure and proper fit in the exhaust system. Designed specifically for Ford Escape, Expedition, F-150, GT, and Lincoln Navigator models, the Denso 234-5174 sensor supports accurate air-fuel mixture readings essential for engine control and emissions compliance.

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 problems related to sensor failure
• Failed emissions tests linked to sensor malfunction

Installation Notes and Tips

Ensure the vehicle is cool before beginning installation to avoid burns. The 19.80-inch wiring harness length provides flexibility for routing; verify connector orientation matches the male connector on the sensor. Use the correct torque on the 0.708-inch threaded fitting to prevent leaks. This sensor is a specific fit for Ford and Lincoln models listed, so confirm compatibility with your vehicle’s year and engine type before installation.

Quality Assurance and Warranty

Denso OE Style sensors are manufactured to meet original equipment standards, ensuring reliable performance and durability. While specific warranty details are not provided here, Denso products typically come with a limited warranty covering defects in materials and workmanship. Refer to the product packaging or manufacturer documentation for exact warranty terms.