Keep your Indmar inboard running cool and charging properly with this genuine Indmar serpentine/drive belt. Designed for 2003-and-newer Indmar 5.7L applications, this multi-rib belt helps drive key engine accessories for reliable performance and peace of mind on the water. It’s also commonly used on the 383 Hammerhead and other premium Indmar engine packages. Brand: Indmar (OEM) Part number: 725034 Engine fitment: Indmar 5.7L (2003+), 383 Hammerhead, and select premium Indmar engines Type: Serpentine / accessory drive belt (multi-rib) Category: Engine service part / maintenance item When to replace: If you notice squealing, glazing, cracking, fraying, or accessory slippage, replacing the serpentine belt is an easy way to prevent downtime and avoid overheating or charging issues. Fitment help: Engine packages can vary by year and configuration. If you’re unsure this belt matches your setup, contact us with your engine model and serial number and we’ll confirm compatibility.
