Part Number: 575011
Keep your boat’s electrical system running the way it was designed with the Indmar 575011 70 Amp Alternator. This OEM replacement is built for Indmar inboard engines that use a lower-output charging system, making it a reliable choice for maintaining factory performance on classic and lightly equipped towboats.
With a 70-amp rating, this alternator provides steady voltage for ignition, gauges, navigation lights, and basic accessories. It’s ideal for boats that don’t rely on high-demand electronics, delivering consistent battery charging without unnecessary strain on the system. The result is smooth starts, stable operation, and dependable performance throughout the day.
Constructed for marine use, it’s designed to handle engine heat, vibration, and moisture while maintaining long service life. As a direct-fit Indmar component, installation is straightforward with proper alignment and connections for compatible engines.
The 575011 alternator is commonly found on older and mid-range Indmar-powered boats, including:
- Supra Sunsport, Supra Comp, and Supra Saltare
- Moomba Outback and Moomba Mobius (early models)
- Malibu Response and Malibu Sunsetter
- MasterCraft ProStar 190 and MasterCraft Maristar with Indmar engines
Fitment depends on engine type and model year, so confirming compatibility by part number (575011) or engine specifications is recommended before ordering.
Key Features:
- 70 amp output for stock and low-demand electrical systems
- Genuine Indmar replacement for proper fit and function
- Provides stable charging for ignition and essential accessories
- Built to withstand marine conditions
- Ideal for older or minimally equipped towboats
If you’re maintaining a classic setup or replacing a worn component, this alternator delivers straightforward reliability and factory-correct performance.