Product Features:Direct-fit OE replacement accurately detects proper evaporative leaks with the utilization of engine vacuumPrecision-calibrated diaphragm and spring properly open and close to provide accurate voltage readings to the switchOE-quality connector and terminals ensure exact fit, resulting in peak conductivity to the engine wiring harness and precise engine performanceHigh-temperature OE-style plastic housing ensures precise fit and performance under hazardous conditions