DENSO 234-5160 Air/Fuel Ratio Sensor Direct Fit Heated Lead - 5-Wire 24.53

The DENSO 234-5160 is a direct-fit, heated wide-band air/fuel ratio (AFR) sensor featuring a 5-wire configuration and a 24.53-inch wire lead length. As an original equipment manufacturer of AFR sensors, DENSO brings the same engineering precision found in factory assemblies to this aftermarket replacement, ensuring seamless installation and reliable performance.

Air/fuel ratio sensors — also known as wide-band oxygen sensors — provide the engine control unit (ECU) with a precise, proportional signal across a broad range of air/fuel mixtures. Unlike traditional narrowband oxygen sensors, AFR sensors can measure ratios from approximately 12:1 to 19:1, giving the ECU the data it needs to continuously optimize combustion across the entire RPM range for maximum efficiency and reduced emissions.

Key Features:

• Quick-response planar zirconia sensing element rapidly detects exhaust oxygen concentration for accurate, real-time readings
• Tarnish-proof platinum electrode maintains long-term accuracy and extends sensor life
• Aluminum-oxide trap layer shields the ceramic element from silicone and lead contamination, protecting the platinum electrode
• Double protection cover maintains optimal operating temperature for faster response and guards against environmental contamination
• Stainless steel housing resists corrosion and provides a rugged, watertight exterior
• 5-wire heated design reaches operating temperature quickly, improving cold-start accuracy and emissions performance
• 24.53-inch wire lead length for direct, plug-and-play installation
• Manufactured and tested to OE standards — part of DENSO's First Time Fit program

Replacing a worn or failed air/fuel ratio sensor restores proper fuel trim, improves fuel economy, reduces harmful exhaust emissions, and extends catalytic converter life. The DENSO 234-5160 is sold individually and is built to deliver OE-level performance from the first installation.