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Crowley Marine: serving boaters for over 40 years Crowley Marine: serving boaters for over 40 years
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Mercruiser Stern Drives

MerCruiser Stern Drives

MerCruiser stern drives are the result of over 40 years of refining and reengineering the world’s best outdrives. And over 40 years spent as the unquestioned technology, performance and propulsion leader. MerCruiser stern drive technology is designed to maximize your experience–whether through ease of maintenance or trouble-free operation.

MerCruiser Alpha One Gen I Sterndrives

Mercruiser Alpha One Gen One stern drives were produced from 1984-1990. Improved gear design and bearing arrangements made the Alpha One drive stronger than its "R" Drive predecessor. These Mercruiser Alpha One's come in four different gear ratios: 1.5:1, 1.65:1, 1.84:1 and 1.98:1. The lower housings for all of the Alpha One outdrives use the same lower unit as the gearing is changed in the upper housing.

MerCruiser Alpha One Gen II Sterndrives

These are an updated design on the first Alpha Ones which were manufactured by Mercruiser from 1991-2003. The complete Mercruiser sterndrives come in five gear ratios: 1.47:1, 1.61:1, 1.81:1, 1.94:1 and 2.0:1. The 2.0:1 gear ratio was only available from 1998-2003 and also has a Mercruiser lower unit with a ratio of 2.0:1 as opposed to the standard 1.62:1.

Latest Repair Stories and Reviews

Mariner 60PS

More than 4 hours
less Compression
Grinding and honing of Zylinder. replacement piston!

Less than 30 mins
To long to ship it two weeks to recieve could have bought it local and saved time

Less than 30 mins
Prompt service. Good inventory. Responsive to questions.

Less than 30 mins
Easy experience and decent prices

Evinrude 1956 15hp

More than 4 hours
Total powerhead rebuild & restoration.
I buy parts from Crowley as needed. They are always helpful & have a lot of what I need. Since I work on old motor I am always looking for older parts
that can be harder to find. Crowley's is very helpful & gets me the part at the right price. Thank you guys again! Dan in TN

Less than 30 mins
Order was on time and parts were exactly as described.

Johnson 225cv

More than 4 hours
Motor don't start since 5 years.
Cleaning carbs, replace cylinder gasket, thermostat. Replace water pump.

Less than 30 mins
Easy and accurate parts look up. Fast shipping. Exact fit on all parts. Nice to find a business that provides excellent service.

Flat $3.95 Shipping on ALL parts orders

We offer shipping flat $3.95 shipping on ALL parts orders. (Complete Engines, Lower Units and Sterndrives excluded). In addition orders over $89 have reduced cost express shipping available in checkout.

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You can get a rough idea of standard transit times from the map above.

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