Flushmaster Outboard Flushing Systems & Quick‑Connect Engine Maintenance Solutions

Flushmaster delivers one of the most advanced and user‑friendly outboard engine flushing solutions available today. Designed for boaters who want faster, cleaner, and more consistent engine maintenance, Flushmaster systems automate the entire flushing process—saving time, reducing water usage, and extending engine life.

The brand’s flagship systems support up to four outboard motors, flushing each engine sequentially for complete internal cleaning before automatically shutting off. This automation is powered by a portable, battery‑operated, marine‑grade controller engineered for reliability in harsh environments. Flushmaster’s IP67 waterproof rating ensures dependable performance on docks, trailers, and in wet conditions.

Flushmaster is also known for its quick‑connect flush ports for Yamaha, Suzuki, and Mercury outboards, making routine maintenance faster and more convenient. These accessories complement the full line of multi‑engine flush kits, which are available in multiple hose lengths to accommodate different vessel layouts.

Developed by Seamule as a breakthrough in marine maintenance technology, Flushmaster is recognized as the world’s first portable automatic outboard engine flushing system—designed to streamline post‑use engine care for both single‑ and multi‑engine boats.

Whether you’re maintaining a single outboard or a high‑horsepower multi‑engine setup, Flushmaster provides a fast, efficient, and consistent flushing experience that protects your investment and simplifies your boating routine.

Why Choose Flushmaster Outboard Flushing Systems

• Automated multi‑engine flushing for up to four outboards, with sequential cleaning cycles.
• Portable, battery‑powered controller using (3) AA batteries for easy dockside or trailer use.
• IP67 waterproof construction ensures durability in marine environments.
• Quick‑connect flush ports available for Yamaha, Suzuki, and Mercury outboards.
• Multiple hose‑length options to fit different boat configurations and engine spacing.
• Designed by Seamule, the innovator behind the world’s first portable automatic outboard flushing system.
• Saves time and water compared to manual flushing methods.
• Ideal for single or multi‑engine boats, from small center consoles to offshore rigs.
• Enhances engine longevity by ensuring consistent internal salt and debris removal.
• Compatible accessories include storage bags, cradles, and replacement components.