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 engine parts for most engine applications on the water today—including MerCruiser, OMC, Johnson/Evinrude, Volvo and more.
How to find the bolt kit you need
Select your bolt kit by locating the OEM part number in the table below. Bolts kits can also be selected according to a particular stern drive.
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 # | Fits | Model |
|---|---|---|---|---|
| 18-2141 | GLM | 21080 | Alpha I, Gen II, Bravo | 10475911 |
| 18-2141 | Mercruiser Stern Drive | 10-97934A1 | Alpha I, Gen II, Bravo | 10475911 |





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