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 —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 you need
Select your bolt by locating the OEM part number in the table below. Bolts can also be selected according to their diameter, thread pitch and length.
The Sierra Engine Parts Selector
If you do not see the bolt (or other engine part) you need, please visit the, where you can search by engine make, model, serial number or year of manufacture.
| Sierra # | Application | Replaces OEM Part # | Bolt Diameter | Length | Qty. | Model |
|---|
| 18-8404-1 | Mercruiser Stern Drive | 10-8053434 | 3/8" | 1 11/16" | 1 | 10499754 |
| 18-8403 | Chrysler/Force/US Marine | FI1100662, FI1100347 | 3/8" | 1 13/16" | 1 | 10499663 |
| 18-8403 | Mercruiser Stern Drive | 10-8053433, 10-812509184 | 3/8" | 1 13/16" | 1 | 10499663 |
| 18-8402 | Mercruiser Stern Drive | 10-8053432, 10-813642 | 3/8" | 4 3/8" | 1 | 10499747 |
