Square Cap Outboard Motor Flusher Rectangular Muffs Engine Flush Tool
WL-71251
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- 30 Day Return Policy
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Square Cap Motor Flusher (MMS-426)
Premium Engine Maintenance & Flush Tool
Protect your marine investment with the MMS-426 Square Cap Motor Flusher. This essential tool allows you to run your outboard engine or sterndrive on land using a standard garden hose. By flushing out salt, sand, and silt after every trip, you significantly reduce the risk of internal corrosion and cooling system clogging.
Key Features
- ✔ Rectangular "Square" Muffs: Provides a superior seal on engines with longer water intake grates.
- ✔ Quick-Connect Fitting: Hozelock compatible for effortless hose attachment.
- ✔ Durable Frame: Black epoxy-coated spring steel resists rust and provides high clamping force.
- ✔ Universal Application: Ideal for most small to mid-sized outboards and sterndrives.
Technical Specs
| SKU: | MMS-426 |
| Cup Type: | Rectangular / Square Cap |
| Feed Style: | Single Feed |
| Material: | Marine-Grade Rubber & Steel |
| Compatibility: | Engines < 50HP (Rec.) |
Compatibility / Fitment Guide
| Make/System | Model/Application | Notes |
|---|---|---|
| Small Outboards | Yamaha, Mercury, Mariner, Suzuki, Honda | Best for engines 2HP to 40HP |
| Tohatsu / Nissan | All models with side water intakes | Rectangular shape fits intakes well |
| Sterndrives | Mercruiser / Volvo Penta | Check intake dimensions fit rectangular cup |
OEM Cross Reference
| Sierra | 099077-00 |
| Moeller | 099077-00 |
| Easterner | C16104 / MD1053 |
| Waveline | WL-71251 |
Questions & Answers
Is this a genuine original part?
This is a premium quality aftermarket maintenance part by MidMarine, manufactured to meet or exceed original marine equipment standards for performance and engine safety.
How do I know if it is compatible?
If your outboard has side-mounted water intake grates and is under 50HP, this universal flusher is the ideal choice. The rectangular cups provide better coverage for modern intake designs than traditional round muffs.
Can I use this for engines larger than 40HP?
While the rectangular cups physically fit many larger engines, for outboards over 50HP we recommend using a dual-feed flusher to ensure the water pump receives sufficient volume during operation.
Note: Always monitor your engine's "tell-tale" stream while flushing to ensure proper water flow. Available at 4boats.co.uk.
For the products under £150 the shipping is £6.99.
Free delivery for most items over £150.
