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Osage Beach, MO

Inboard Engine Service & Repair in Missouri:Inboard Engine Service & Repair Services

When you own a high-performance towboat, you require maintenance that is as specialized as your vessel. At Performance Marine Watersports in Osage Beach, MO, we are not a general marina shop. Our focus is exclusively on the complex demands of inboard boat service and repair for wake and surf boats, ensuring that every MasterCraft, Supra, Moomba and Used Boats we touch performs perfectly on Lake of the Ozarks (LOZ).

Our technicians are masters of the marine engine, we offer a level of precision, care, and factory authorization that protects your boat's warranty, reliability, and value.

The Inboard Specialist Advantage: Why Choose a Certified Dealer?

Certified Inboard Repair Osage Beach, Factory-Certified MasterCraft Technicians

Inboard engines (V-drive, direct drive) and integrated surf systems are far more complex than standard outboard motors. Choosing a dealer like Performance Marine Watersports provides crucial advantages:

  • Proprietary Training & Tools: Our technicians are factory-certified MasterCraft, Supra, and Moomba experts. They receive constant training on the latest models and possess the manufacturer-specific diagnostic software (for Indmar and PCM engines) required to accurately troubleshoot digital systems and complex engine codes.
  • Warranty Integrity: Only service performed by a certified dealer using Original Equipment Manufacturer (OEM) parts guarantees your factory and extended warranties remain valid. We never compromise on quality or procedure.
  • Specialized Focus: We don't waste time learning new systems. We live and breathe towboats, ensuring faster, more accurate service and minimizing your time off the water in Missouri.

Comprehensive Inboard Mechanical Services

Inboard Engine Maintenance LOZ, Propulsion System Repair

We offer complete mechanical care tailored to the demands of towing heavy ballast and navigating the busy waters of Lake of the Ozarks.

Engine & Drivetrain:


  • 100/300 Hour Service: Manufacturer-mandated fluid changes, filter replacements, and system checks to preserve the life of your engine.
  • V-Drive & Transmission Service: Critical maintenance on the V-drive system to ensure smooth operation and prevent costly transmission failure.
  • Propulsion System Repair: Diagnosis and repair of prop shafts, struts, rudders, and propeller alignment to eliminate damaging vibrations.
  • Advanced Diagnostics: Troubleshooting complex electrical, fuel injection, and electronic control issues unique to modern towboat platforms.

Seasonal Protection:


  • Complete Marine Winterization: Our most important service for Missouri boaters. We protect all systems (engine, ballast, freshwater, generator) against severe cold to prevent freeze damage.
  • Spring Commissioning: A thorough inspection and preparation service, ensuring your boat is safely de-winterized, batteries are checked, and all systems are running perfectly for your first launch of the season on LOZ.

The Performance Marine Consumer Experience

Osage Beach Boat Service Customer Focus

Our family-run business is built on a reputation for excellence and a deep understanding of the Missouri boating lifestyle.

  • Dockside Convenience: For routine inboard engine maintenance and minor fixes, ask about our popular Dock Side Service. We come to your dock on Lake of the Ozarks, eliminating the time and cost of trailering your boat.
  • Guaranteed Quality: Our goal is to get the repair done right the first time, every time. You receive a full explanation of the work performed and a clear estimate before we begin.
  • Extended Services: We also offer cosmetic restoration (fiberglass and gelcoat repair) and custom installations (premium audio, ballast upgrades) to maintain your boat's appearance and functionality.

Don't trust your MasterCraft, Supra, or Moomba to anyone who isn't certified. We are your inboard specialists in Osage Beach, ready to protect your weekends.

Schedule Your Certified Inboard Service

Protect your investment with the Lake of the Ozarks' leading inboard specialists. Contact our service center today.

Your Watersports Lifestyle, Seamlessly Delivered

The Performance Marine Watersports Difference: A Total Commitment to Your Experience

At Performance Marine Watersports, your journey from the showroom floor to the open water is designed to be nothing short of exceptional. We've meticulously integrated our Sales, Service, and Pro Shop to deliver a complete, worry-free Customer Buying and Service Experience. It starts with our expert sales team, guiding you to the perfect new MasterCraft, Supra, or Moomba, or a high-quality used boat, tailored to your family's needs. That relationship continues with our premier Service department, ensuring your investment performs flawlessly year after year. Finally, our fully stocked Pro Shop ensures you and your crew are always geared up and ready to ride. We aren't just selling boats; we're providing the comprehensive support and expertise you need to maximize every moment on the water.

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