⚓ Seal your ride with confidence — don’t let leaks sink your style!
The Quicksilver 8M0058391 Gear Case Drain Screw Seal is a precision-engineered, OEM-spec replacement seal designed for Mercury MerCruiser and most Mercury Outboards. This durable, easy-to-install 3/8-16 threaded seal ensures leak-proof performance and long-lasting protection in marine gear cases. Sold in a convenient pack of two, it’s the essential upgrade for maintaining your boat’s optimal performance.
| Item Package Dimensions L x W x H | 5.2 x 2.24 x 1.61 inches |
| Package Weight | 0.02 Kilograms |
| Brand Name | Quicksilver |
| Model Name | Quicksilver |
| Manufacturer | Quicksilver |
| Part Number | 8M0058391 |
| Included Components | End Product & Information |
A**R
quality of the quicksilver product
great job, change every yr on the Bass Tracker Classic XL, great product
J**G
OEM quality
OEM replacement. A must have when doing an oil change on lower unit. 40hp Mercury efi 2024
D**K
Works great
These are basically OEM. At this price you can live with changing the gasket every year as you check your fluid levels.
A**R
Good product
Good product
S**.
Perfect replacement
Exact fit. Perfect replacement
M**K
No knockoff
This was a manufactures part, not a knock off so everything was good.
R**Y
Fit perfectly
Fit perfectly.
S**K
Mercury 115
Not much to say fit my mecury 115 4 stroke
Trustpilot
1 day ago
2 weeks ago
