DENSO 234-5748 Air/Fuel Ratio Sensor Wide-Band O2 Sensor

The DENSO 234-5748 Air/Fuel Ratio Sensor (AFR sensor) is a precision-engineered wide-band oxygen sensor replacement designed to deliver OE-level fit, form, and function. DENSO air/fuel ratio sensors were developed to measure air-to-fuel ratios under a wider range of driving conditions than conventional oxygen sensors, sending information to the engine management computer to make adjustments based on driving conditions.

These sensors utilize a sophisticated sensing element that produces a precise output in proportion to the air/fuel ratio, providing the ECU with an exact AFR response — resulting in better performance, lower emissions, and increased gas mileage.

Key Features:

• Aluminum-oxide trap layer designed to keep silicone and lead outside the ceramic element, preventing damage to the platinum electrode.
• Double protection cover maintains proper unit temperature for quicker response times and protects the ceramic element from contamination.
• Stainless steel housing resists corrosion and contamination with a rugged, watertight body.
• Quick-response planar zirconia element quickly detects oxygen concentration and measures air/fuel ratios from approximately 12:1 to 19:1.
• Manufactured and tested to the strictest OE standards for unparalleled performance — each component is precision-built for exact replacement and a first-time fit.
• Optimal air/fuel ratios reduce fuel consumption and maximize catalytic converter life.

From the first thimble-type sensors to today's heated, quick-response sensors required to meet ever more stringent emissions regulations, DENSO has supplied OEMs with quality components — and you can rely on DENSO First Time Fit A/F sensors.