Outboard Engine Flushing Kit For Mercury Mariner And MerCruiser Sterndrives With Side Intake Gear Case Flush So You Can Flush Freshwater Through The Gear Case With A Garden Hose Fits 20HP And Up

Gear-Case Flushing Kit for Mercury & MerCruiser

✔️ Universal freshwater flush for Mercury/Mariner and MerCruiser

The FasWorx Through Gear Case Flushing Kit is a side-intake attachment that lets you run freshwater through the gear case by connecting a standard garden hose to Mercury/Mariner outboards and MerCruiser sterndrives. This single-unit kit is ideal for saltwater boats and engines that see mixed contaminants, helping prevent corrosion and overheating during maintenance.

✅ Fits Mercury/Mariner 20HP+ and MerCruiser Sterndrives
✅ Universal freshwater flushing to remove salt and contaminants from cooling systems
✅ Wide compatibility: Mercury/Mariner 20HP+ and MerCruiser sterndrives
✅ High-flow rubber cups and corrosion-resistant steel frame for durable use
✅ Part FWX-07-100; color black; garden-hose connection included

💡 What is a gear-case flushing kit used for in Mercury/Mariner outboard maintenance?

It’s a handy tool for keeping cooling passages clear and preventing corrosion during saltwater maintenance.

• Keeps cooling channels clear to reduce corrosion risk in saltwater use
• Supports routine maintenance on Mercury/Mariner 20HP+ and MerCruiser sterndrives
• Connects to a standard garden hose for quick, on-site flushing
• Helps prevent overheating by maintaining proper gear-case cooling flow