Balmar > Alternators Alternator: 604-150-DV Description Alternator: 604-150-DV- 604 Series- 150A- 12V- Saddle Mount (Dual Foot)- 4in- Deep Dual Vee Pulley- Isolated Ground- 4" J-180-Style Mounting:Typical for Caterpillar, Cummins, Detroit Diesel & John