YP models: Fit engines using a 3.15" ID dual foot (saddle) mount for many 6.2-8.1L Mercruiser, Volvo Penta, Crusader & other large block GM gas, Yanmar, Westerbeke, Perkins diesels with Hitachi-equipped alternators.
Contact Balmar Technical Support with any application questions to confirm your specific engine/alternator configuration and appropriate belt/pulley. ALT Part Numbers: BLM 60100SV, 00-0992, 38-3364