The SM 7403 is a high-performance A/C compressor clutch pulley specifically engineered for the Skoda Fabia and its siblings in the Volkswagen Group. This pulley is designed for the Behr-type (B.TYPE) compressor architecture. Unlike Denso units, Behr compressors require a specific internal bearing offset and clutch plate engagement profile, which the SM 7403 replicates to OE standards.