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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
Took forever to get, called after weeks of waiting and the patt was in. They did ship it after I called. The 3rd part never shipped out to me
by james

Order Review

Repair Difficulty:
Easy
Repair Time:
Less than 30 mins
they have an excellent inventory of parts and are accomodating for special requests
by stanislaus

Johnson 50

Repair Difficulty:
Repair Time:
More than 4 hours
Pretty terrible. Still have not received my order.
by Jens
Problem fixed: Leaking power head to exhaust.
Ordered part. Never received order. Called and had new order sent. Still have not received part. When I finally get the part, it will hopefully only b …
e a two hour repair or so.

Order Review

Repair Difficulty:
Easy
Repair Time:
Less than 30 mins
Very simple order arrived missing items. An attempt was made to correct the error, and only half the missing items were shipped. Still waiting on the rest.
by Matthew

Evinrude Junior

Repair Difficulty:
Medium
Repair Time:
30 to 60 mins
Great experience. They had the exact diagrams i needed for my motor so i could order the right parts. And even though part of the shipment was wrong, customer service responded right away to my email and corrected the problem.
by Terry
Problem fixed: Broken cam follower
Bought this 1990 unit used and it started easily but had no power. Had to remove lower engine cover and found a broken cam follower and missing linkag …
e to carburetor. Crowley had the parts and i waa able to repair engine.

Order Review

Repair Difficulty:
Easy
Repair Time:
Less than 30 mins
never will I use you ever again. One star is way too much to rate you.
by arnie

Order Review

Repair Difficulty:
Easy
Repair Time:
Less than 30 mins
Communication is fantastic, kept me up to date with back ordered parts and expected shipping fates
by newton