Denso 234-5097 Air / Fuel Ratio Sensor - Upstream or Upstream Right

Reliable Air/Fuel Ratio Sensor for Ford, Lincoln, and Mercury Vehicles

The Denso OE Style 234-5097 Air/Fuel Ratio Sensor is engineered to provide precise emissions control for select Ford, Lincoln, and Mercury models. Designed as a specific fit part, this heated sensor ensures accurate air-fuel mixture readings to support optimal engine performance and emissions compliance.

• Heated sensor type for faster response times
• Specific fit for Ford, Lincoln, and Mercury vehicles
• Wiring harness length of 11.54 inches for proper installation
• Five-wire configuration with male connector
• Thread diameter of 0.711 inches for secure mounting
• Regular grade type for standard durability and performance

About the Denso OE Style Product Line

The OE Style line from Denso focuses on delivering replacement parts that closely match original equipment specifications. The 234-5097 Air/Fuel Ratio Sensor maintains the quality and fitment standards expected from factory components, ensuring compatibility and reliable operation in vehicles such as the Ford F-350 Super Duty, Lincoln MKX, and Mercury Sable.

Detailed Product Description

This Denso Air/Fuel Ratio Sensor (part number 234-5097) is a heated sensor designed to provide accurate feedback to the engine control unit by measuring the oxygen content in the exhaust gases. The sensor’s 11.54-inch wiring harness and five-wire setup with a male connector allow for a precise and secure connection. Its specific fitment ensures compatibility with a range of Ford, Lincoln, and Mercury models including the Ford Edge, Escape, Explorer, and Transit series, as well as Lincoln MKC, MKS, MKT, MKX, MKZ, and Mercury Taurus and Sable. The 0.711-inch thread diameter facilitates proper installation and sealing in the exhaust system.

Common Issues Addressed by This Sensor

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

Installation Notes and Tips

• Ensure the vehicle is cool before sensor removal to avoid burns
• Use appropriate tools to avoid damaging the sensor or wiring harness
• Verify connector type and wiring count match the original sensor
• Apply anti-seize compound on threads if recommended by manufacturer
• Clear any diagnostic trouble codes after installation

Quality Assurance and Warranty

Denso’s OE Style sensors are manufactured to meet original equipment standards, providing reliable performance and durability. While specific warranty details may vary, Denso parts typically come with a limited warranty covering defects in materials and workmanship. Refer to the product documentation or manufacturer for exact warranty terms.