V-belt for Mercruiser Stern Drives
Model #
4378428
Mfg #
18-15470
$38.99
Orders placed by 3 PM EST typically ship the same day. Orders placed after this time will be processed the next business day.
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18-15470 V-Belt for Mercruiser Stern Drives replaces: Mercury Marine 57-78200A1
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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.
Key Features of Sierra V-Belts
- High-strength synthetic cords resist shock load
- Low-stretch properties assure uniform performance over the life of the belt
- Special rubber compound section assures smooth and even transfer of load forces to the cords
- Cogs are molded to precise engineering tolerances to improve flexibility and maintain cord support
- Rubber edges maintain positive, no-slip contact with pulley grooves
V-Belt Applications
| Sierra Part # | Application | Replaces OEM Part # | Effective Length | Top Width | Model |
|---|---|---|---|---|---|
| 18-15550 | Mallory | 9-55000 | 55" or 139.7cm | 29/64" or 11.5mm | 10533602 |
| 18-15550 | MerCruiser Stern Drive | 57-13458, 57-13458T, 57-13458Q | 55" or 139.7cm | 29/64" or 11.5mm | 10533602 |
| 18-15490 | Mallory | 9-55007 | 52 1/2" | 29/64" or 11.5mm | 10533560 |
| 18-15490 | MerCruiser Stern Drive | 57-816295T, 57-816295Q | 52 1/2" | 29/64" or 11.5mm | 10533560 |
| 18-15290 | MerCruiser Stern Drive | 57-53215, 57-53215T, 57-13457T, 57-13457, 57-13457Q | 29" or 73.7cm | 29/64" or 11.5mm | 10533438 |
| 18-15480 | Mallory | 9-55003 | 48" or 121.9cm | 29/64" or 11.5mm | 4378360 |
| 18-15480 | MerCruiser Stern Drive | 57-48122, 57-48122Q | 48" or 121.9cm | 29/64" or 11.5mm | 4378360 |
| 18-15300 | MerCruiser Stern Drive | 57-49756 | 30" or 76.2cm | 29/64" or 11.5mm | 10533446 |
| 18-15370 | Mallory | 9-55005 | 37" or 94cm | 29/64" or 11.5mm | 10533479 |
| 18-15370 | MerCruiser Stern Drive | 57-65607, 57-65607Q | 37" or 94cm | 29/64" or 11.5mm | 10533479 |
| 18-15370 | Mercury Marine | 57-65607T | 37" or 94cm | 29/64" or 11.5mm | 10533479 |
| 18-15345 | MerCruiser Stern Drive | 57-74271, 57-74271Q | 34 1/2" or 87.6cm | 29/64" or 11.5mm | 10533461 |
| 18-15345 | Mercury Marine | 57-74271T | 34 1/2" or 87.6cm | 29/64" or 11.5mm | 10533461 |
| 18-15470 | MerCruiser Stern Drive | 57-78200, 57-78200A1, 57-78200Q1 | 47" or 119.4cm | 29/64" or 11.5mm | 4378428 |
Engine Parts Selector
If you do not see the V-Belt (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.
Compatibility
Mercruiser Stern Drive, 0A631894 Thru 0B785148, 1986-1989
,
Mercruiser Stern Drive, 0B721206 Thru 0D805068, 1988-1992
,
Mercruiser Stern Drive, 0B771113 Thru 0D603117, 1988-1991
,
Mercruiser Stern Drive, 0B788366 Thru 0D715493, 1981-1992, 340 Horsepower
,
Mercruiser Stern Drive, 0C391564 Thru 0D715493, 1988-1992
,
Mercruiser Stern Drive, 4623115 Thru 5889913, 1977-1980
,
Mercruiser Stern Drive, 4623115 Thru 6083144, 1977-1981
,
Mercruiser Stern Drive, 5889914 Thru 0B788365, 1981-1992, 340 Horsepower
,
Mercruiser Stern Drive, 6083145 Thru 0B816540, 1982-1987, 330 Horsepower
Type
Belts
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