18-8411 Riser Bolt for Mercruiser Stern Drives 3/8"-16 x 6 3/4"
Sierra Marine engine parts are designed to meet or exceed the OEM part they are intended to replace and they are backed by the SeaStar Solutions Two-Year Warranty—one of the best in the business.
We offer a variety of Sierra bolts, oil seals and seal kits for most engine applications on the water today—including MerCruiser, OMC, Johnson/Evinrude, Volvo and more.
How to find the bolt you need
Many of the bolts we offer fit multiple applications. Notice in the list below that in addition to Mercruiser and Mercury applications, there are a variety of other engine applications for the bolts offered here. Bolts can also be selected by thread size, which also appear in the table.
The Sierra Engine Parts Selector
If you do not see the bolt (or other engine part) you need, please visit the Sierra Engine Parts Selector, where you can search by engine make, model, serial number or year of manufacture.
| Sierra # | Application | Replaces OEM Part # | Thread Size | Qty. | Model |
|---|---|---|---|---|---|
| 18-8411 | Mercruiser Stern Drive | 10-44387 | 3/8"-16 x 6 3/4" | 1 | 10499689 |
