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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

Order Review

Repair Difficulty:
Easy
Repair Time:
Less than 30 mins
by david

Order Review

Repair Difficulty:
Easy
Repair Time:
Less than 30 mins
Not good. I received someone else's parts. The next day I got my parts. Several days later I got a duplicate order of my parts. You did send a return ticket for all the wrong parts. I just had to use my time to get them to FedEx.
by Allen

Order Review

Repair Difficulty:
Easy
Repair Time:
Less than 30 mins
had a good experience had a missing part on order easy to have it sent in timely mannor
by Doug

Order Review

Repair Difficulty:
Easy
Repair Time:
Less than 30 mins
by William

Order Review

Repair Difficulty:
Easy
Repair Time:
Less than 30 mins
by Mark

Order Review

Repair Difficulty:
Easy
Repair Time:
Less than 30 mins
by James

Order Review

Repair Difficulty:
Easy
Repair Time:
Less than 30 mins
Excellent, easy to order, store personnel helpful, items ordered arrived when expected.
by Thomas

Order Review

Repair Difficulty:
Easy
Repair Time:
Less than 30 mins
months ago by Jeff

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.