Any good mechanic will tell you - use the very best components available. DENSO First Time Fit® oxygen & air/fuel sensors are specifically designed to meet the challenging demands of today's engine systems. Each of DENSO's oxygen sensors is constructed of the highest quality materials available. High-quality stainless steel, porous polytetrafluoroethylene (PTFE), fluorine rubber, aluminum oxide, high-grade platinum and ceramics are used in each DENSO First Time Fit® oxygen sensor. The bottom line is: DENSO produces the finest oxygen sensors in the world.
DENSO can guarantee the quality of the product they produce because every component that leaves their factories has been designed with precision, manufactured to the strictest OE standards and subjected to rigorous safety and performance tests. In the end, it all comes down to quality - that's what the DENSO name stands for.