Fill/Drain Kit
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Compatible Applications
| Brand | Application | Application Notes |
|---|---|---|
| Mercury | Outboards | 10–200HP |
| MerCruiser | Sterndrives | MC I, R, MR, Alpha One, Alpha One Gen II, Bravo |
| Force | Outboards | 15–120HP |
| Johnson / Evinrude | Outboards | Confirm fitment before ordering |
Product Details
| Specification | Value |
|---|---|
| Part Number | 18-2446 |
| Manufacturer | Sierra (Aftermarket) |
| Part Type | Lower Unit Fill/Drain Kit |
| Contents | Drain screw with gasket |
What This Product is Used For
This Sierra fill/drain kit replaces the drain screw and gasket used when changing gear lube in the lower unit or sterndrive. A fresh gasket helps the screw seal properly so water can't get into the gearcase.
Key Features and Benefits
- Drain screw with gasket for lower unit gear lube service
- Fits a wide range of Mercury, MerCruiser, and Force applications
- Sierra aftermarket replacement
FAQ
Should I replace the drain screw gasket at every gear lube change?
Yes, that's good practice. A worn or crushed gasket can let water into the gearcase.
Will this fit my engine?
It's listed for Mercury 10–200HP outboards, MerCruiser MC I, R, MR, Alpha One, Gen II, and Bravo drives, and Force 15–120HP. Confirm your model before ordering.
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