Balmar 604-150-K6 604-Series 150 Amp 12V Dual Foot Marine Alternator with K6 Serpentine Pulley

The Balmar 604-150-K6 is a high-output marine alternator from the 604-Series, delivering 150 amps at 12 volts in a compact small-case design. It features a 4-inch saddle mount (dual foot) J-180-style bracket configuration, making it a direct-fit replacement for large diesel marine engines including Caterpillar, Cummins, Detroit Diesel, and John Deere applications. The alternator ships with a K6 serpentine pulley and features an isolated ground design for reliable marine electrical performance.

Key Features:

• 150 amp output at 12 volts for high-demand marine charging applications
• 4-inch dual foot (saddle mount) — J-180-style bracket for broad engine compatibility
• K6 serpentine pulley included for modern belt drive systems
• Isolated ground design for superior corrosion resistance and marine-grade reliability
• Smart Ready® Technology — built-in internal regulator can operate as a standalone charge controller or serve as a backup regulator
• Compatible with Balmar ARS-5 and Max Charge external voltage regulators for multi-stage charging
• Compliant with USCG Title 33, ISO, SAE, and CE standards

The 604-150-K6 features Balmar's Smart Ready® internal regulation, which allows it to function as a stand-alone charge controller — ideal as a built-in backup regulator for cruisers, or as a full-time regulator where advanced multi-stage regulation is not required. For vessels with larger deep-cycle battery banks or less frequent engine duty cycles, this alternator pairs seamlessly with Balmar's ARS-5 or Max Charge multi-stage voltage regulators for optimized battery charging performance.