Sierra's 18-5946 Alternator features a single wire connection that fits Mercruiser and many other applications. It is equipped with a fan and serpentine drive pulley. Rated SAE J1171. Each Sierra product meets or exceeds the original equipment part it replaces.
Single wire connection fits Mercruiser and many other applications Equipped with fan and serpentine drive pulley 1-Wire, 68 Amp Rated SAE J1171