DENSO 234-5166 Air/Fuel Ratio Sensor Direct Fit Heated - 4-Wire

The DENSO 234-5166 Air/Fuel Ratio Sensor is an OE-style direct fit replacement sensor designed to restore optimal engine performance and fuel efficiency. This precision-engineered sensor monitors the air-fuel mixture in real-time, sending critical data to your vehicle's engine control unit to maintain the ideal combustion ratio for maximum performance and minimal emissions.

Key Features:

• 4-wire heated design for rapid response and accurate readings
• 25.83-inch wire harness length for easy installation
• Direct fit replacement requiring no modifications
• Manufactured and tested to strict OE standards for unparalleled performance
• Precision-built for exact replacement and first-time fit
• Stainless steel housing resists corrosion and contamination
• Double protection cover shields ceramic element from silicone and lead poisoning
• Exclusive aluminum-oxide trap layer prevents damage to platinum electrode

DENSO air/fuel ratio sensors help maximize engine performance while reducing fuel consumption and harmful emissions. The heated element ensures quick warm-up for faster sensor response, essential for modern engine management systems. When your check engine light illuminates due to a faulty air/fuel sensor, this DENSO replacement restores proper function and helps your vehicle pass emissions testing.

As a leading OE supplier to major automakers worldwide, DENSO brings decades of engineering expertise to every sensor. Each component undergoes rigorous testing to ensure it meets or exceeds original equipment specifications, giving you confidence in long-term reliability and performance.