DENSO Upstream Front Air Fuel Ratio AFR Sensor compatible with Toyota Sienna 33L V6 20042006

REDUCE EMISSIONS The DENSO AirFuel Ratio Sensor AFR is one of the most sensitive components on your car engine. The sensor measures the airtofuel mixture in the exhaust stream under a wide range of driving conditions and sends information to the engine management computer to make adjustments based on driving conditions. This sensor reduces fuel consumption and emissions, and maximizes catalytic converter life by keeping the airfuel mixture at an optimum ratio MAINTAIN ACCURACY OVER TIME This DENSO AFR sensor provides much finer control of airfuel mixtures in varied operating conditions and enables the fuel injection and engine timing to work more efficiently. Tarnishproof platinum electrodes extend the life of the sensor while the DENSO aluminumoxide trap layer prevents damage to the electrode. Damagetolerant stainless steel construction, watertight housing, and a porous PTFE filter prevent particulates from seeping into the casing RELY ON QUALITY AUTO PARTS From the development of direct ignition coils to revolutionizing the concept of the aftermarket performance spark plug by using platinum and iridium, DENSO is often on the front lines of product advancement TRUST IN DENSO The automotive industry has recognized the DENSO commitment to quality through such prestigious awards as the Deming Award for Quality, the J.D. Power and Associates Chairmans Award, and numerous supplier awards for quality