Part Number: 713-9400
If you’re running a high-compression inboard or performance-based marine engine, starter choice matters. You want strong torque, compact size, and durability in a marine environment—especially on Indmar-powered boats where heat and tight engine bays are common. The Powermaster 713-9400 is built exactly for that kind of demand.
Upgrade your starting performance with the Powermaster 713-9400 Ultra Torque Starter, a high-performance mini starter engineered for GM-based marine engines and high-compression applications. Designed to deliver serious cranking power in a compact footprint, this starter is a proven solution for boats that demand reliable ignition under load.
Built with a powerful 2.5 kW motor producing over 250 ft-lbs of torque, this unit is capable of turning over engines with compression ratios exceeding 18:1—making it ideal for modified or performance-tuned setups. The gear-reduction design improves efficiency while reducing strain on your battery, ensuring faster starts and consistent engagement.
The adjustable billet aluminum mounting block allows for precise fitment and clearance, especially in tight engine compartments or when running headers or upgraded exhaust systems. Its corrosion-resistant construction adds durability in marine environments where moisture and heat are constant factors.
Common Marine Fitments (GM-Based Indmar Applications)
The 713-9400 is designed for GM small block and big block V8 platforms, making it a strong upgrade or replacement for many Indmar-powered boats, including:
- Supra Launch 21 V, Supra Launch 22 SSV, and Supra Sunsport 22 V
- Moomba Mobius LSV, Moomba Outback V, and Moomba Mobius XLV
- Malibu Wakesetter VLX and Malibu Sunsetter LXI
- MasterCraft X2 and MasterCraft XStar with Indmar engines
This starter is compatible with engines such as GM 5.0L, 5.7L, 6.0L, and 8.1L Indmar platforms using 153- or 168-tooth flywheels.
Fitment can vary based on mounting style and engine configuration, so verifying compatibility by part number (713-9400) and engine specs is recommended.
Key Features
- High-torque 2.5 kW motor for reliable cranking
- Gear reduction design for improved efficiency and performance
- Supports high-compression engines up to 18:1
- Adjustable billet aluminum mounting block for precise fit
- Compact mini starter design for tight engine bays
- Corrosion-resistant construction for marine durability
If you’re dealing with slow cranking, heat soak issues, or a modified engine setup, the Powermaster 713-9400 delivers the torque and reliability needed to start your boat every time—no hesitation, no struggle.