Part Number: 755024
Keep your charging system simple, reliable, and true to factory specs with the Indmar 755024 55 Amp Alternator. Built as an OEM Prestolite unit, this alternator is designed for Indmar inboard engines found in many classic towboats, delivering steady output for essential electrical systems without unnecessary complexity.
With a 55-amp rating, this alternator is ideal for stock setups running ignition, gauges, navigation lighting, and basic accessories. It provides consistent voltage and dependable battery charging, helping prevent hard starts and electrical fluctuations during normal operation. Commonly used on Indmar engines from the late 1990s through early 2000s, it’s a proven solution for maintaining original performance.
Built for marine conditions, the 755024 features durable internal components designed to handle heat, vibration, and moisture. As a direct-fit replacement, it matches factory mounting points and wiring for straightforward installation on compatible engines.
This alternator is typically found on Indmar-powered boats from the era when simpler electrical systems were standard. Known fitments include:
- Supra Sunsport, Supra Comp, and Supra Launch (late 90s–early 2000s 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-equipped models)
Fitment depends on engine type, pulley setup, and model year, so confirming compatibility by part number (755024) or engine details is recommended before ordering.
Key Features:
- 55 amp output for stock and low-demand electrical systems
- Genuine Indmar / Prestolite OEM design for proper fit and function
- Consistent charging for ignition, lighting, and essential electronics
- Built to handle marine environments and long-term use
- Direct replacement for many older Indmar engine applications
If you’re maintaining a classic Supra or Moomba or simply want to keep your boat running the way it was designed, this alternator offers dependable, factory-correct performance without overcomplication.