Part Number: 725906
Indmar 725906 Alternator Belt
Keep your engine’s electrical system operating the way it should with the Indmar 725906 Alternator Belt. This OEM serpentine belt is built to match original Indmar specifications, delivering the proper length, rib profile, and grip needed to keep the alternator and accessories running smoothly.
A worn or stretched belt can cause slipping, noise, and inconsistent charging—issues you don’t want on the water. Replacing it with the correct factory-fit belt restores steady alternator performance and helps maintain proper system voltage. The 725906 is designed for marine environments, with materials that stand up to heat, moisture, and constant engine vibration.
Engineered as a direct replacement, this belt installs easily and maintains correct alignment and tension on compatible serpentine drive systems.
Common Engine & Boat Fitments
The 725906 alternator belt is used on select Indmar engines with serpentine drive systems, commonly found on newer GM-based platforms and performance applications.
Typical applications include:
- Supra SA, Supra SE, Supra SL, and Supra SG (Indmar-powered models)
- Moomba Mojo, Moomba Max, Moomba Craz, and Moomba Mondo
- Malibu Wakesetter 23 LSV and 25 LSV with Indmar engines
- Axis A22 and Axis A24
- MasterCraft XStar and select X-Series models with Indmar engines
These boats often operate with higher electrical demand from ballast systems, audio upgrades, and onboard electronics, making proper belt performance critical for consistent charging.
Fitment can vary depending on engine configuration and model year, so confirming compatibility with part number 725906 is recommended before ordering.
Key Features
- Genuine Indmar OEM serpentine belt
- Designed for reliable alternator and accessory drive operation
- Helps maintain consistent charging system performance
- Durable construction for marine environments
- Direct-fit replacement for easy installation
If your current belt is showing signs of wear, cracking, or slipping under load, replacing it is a quick and effective way to prevent charging issues and downtime. The Indmar 725906 alternator belt delivers the fit and reliability your engine depends on.