Part Number: 575010
Keep your boat’s charging system operating the way it was designed with the Indmar 575010 70 Amp Alternator. This OEM-style replacement is built for Indmar inboard engines and delivers reliable, consistent power for standard electrical setups found in many wake and ski boats.
Designed with a classic Delco-style configuration, this 12-volt alternator features a V-belt pulley and is commonly used on GM-based Indmar engines. It provides steady output for ignition systems, gauges, navigation lights, and basic onboard accessories—making it a solid choice for boats without heavy electrical demands.
With a 70-amp rating, it offers dependable battery charging and stable voltage throughout the day, helping prevent hard starts or electrical inconsistencies. Its marine-grade construction is built to handle vibration, heat, and moisture, while maintaining long-term durability in real-world boating conditions.
The 575010 alternator is typically found on Indmar engines used in the late 1990s through early 2000s, especially GM 5.0L, 5.7L, and 7.4L platforms with V-belt drive systems.
Common fitments include:
- Supra Sunsport, Supra Comp, and Supra Launch (Indmar-equipped models)
- Moomba Outback, Moomba Mobius, and Moomba Outback LS
- Malibu Sunsetter LXI and Malibu Response LX with Indmar engines
- MasterCraft ProStar 190 and MasterCraft Maristar (Indmar-powered applications)
Fitment varies by engine configuration, pulley type, and model year, so verifying compatibility by part number (575010) or engine details is recommended before ordering.
Key Features:
- 70 amp output for stock and moderate electrical systems
- OEM-style Indmar replacement for proper fit and function
- V-belt pulley design for compatible engine setups
- Consistent charging for ignition, lighting, and essential electronics
- Built for durability in marine environments
If you’re maintaining a classic Supra or Moomba or replacing a worn alternator, this unit delivers straightforward, factory-correct performance you can rely on every time you hit the water.