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Searching for your parts in the DENSO part catalog is easy. Simply select the type of part you are looking for along with the year/make/model of your U.S. or Canadian vehicle. For vehicles in Latin America, please go here.

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        Search for cross reference part numbers for other manufacturers of the parts you're looking for.

        Cross Reference information is provided as a guide only. Please refer to the "Applications" lookup tabs for more detail. Materials and designs will differ among brands, so plugs are not exactly alike. Always check with your OE service manual for proper installation and settings.

        A/F Sensors

        Features:

        • Tarnish-proof platinum electrodes provides longer life and maintains accuracy
        • Quick-response planar zirconia element can quickly detect oxygen concentration
        • Measures A/F ratios from approximately 12:1 to 19:1
        Air-Fuel-Sensor
        Air-Fuel-Sensor

        Increased performance by mapping air/fuel ratios throughout RPM range

        Reduces emissions by keeping the
        air-fuel mixture at an optimum ratio

        Reduces fuel consumption and maximizes catalytic converter life

        Mapping Air/Fuel Ratios Throughout RPM Range for Reduced Emissions

        DENSO’s air/fuel ratio sensor began to appear in the early 90s as vehicle manufacturers increased demands for better emission standards. DENSO’s air-to-fuel ratio sensor were developed to measure the air-to-fuel ratio information under a wider range of driving conditions. The air/fuel ratio sensor sends information to the engine management computer to makes adjustments based on driving conditions. This wider range and variable adjustments control the motor to burn fuel more efficient and produce less emissions.

        As the automotive industry continues to improve on their standards DENSO is keeping the pace with advancements in our engineering to meet the demands from the industry. Also, as light duty fleet owners are holding on to their vehicles for longer periods, DENSO continues to make auto parts available for those critical replacement parts for all applications.

        As oxygen sensor technology has evolved, DENSO’s engineers have been there every step of the way. From the first thimble-type sensors to heated, quick-response sensors required to meet ever more stringent emissions regulations, DENSO has supplied the OE industry with quality components. DENSO continues to innovate with the latest development in oxygen sensors, known as air/fuel sensors. These components, also known as wide-band oxygen sensors, have a broader response range to provide much finer control of air/fuel mixtures over a greater variety of operating conditions. DENSO helped to develop this important new technology. Consumers can rely on DENSO First Time Fit® air/fuel sensors.

        Oxygen and A/F Sensor Positioning: Left or Right?

        Many manufacturers’ catalogs identify the left and right side positioning; however, diagnostic tools refer to sensor locations by Bank and Sensor (e.g. Bank 1 Sensor 1).

        Oxygen Sensor Positioning

        In the diagrams below, the longitudinal engine orientation illustrations depict rear-wheel drive. In cases of transverse engine (front wheel drive), the concepts are the same, however, the mounting direction is at a 90 degree rotation left or right from longitudinal.

        Engine configurations will vary. Please review your service manual or online technical references for accurate engine configurations.

        Three-Sensor Exhaust Systems

        Inline Single / Split 4/5/6 Cylinder

        V6/8/10 Type Dual Exhaust

        V6/8/10 Type Single Exhaust

        Knowledge Base Information Available

        Downloads

        All Products Guide

        28-page quick reference guide to all DENSO products

        Sensors Product Sheet

        Two-page product sheet with features and benefits of DENSO oxygen and air/fuel sensors, engine management sensors and TPMS sensors.