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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 Robert
Problem fixed:
Someone stole engine cover. Still waiting for parts.

Yamaha 25 Hp

Repair Difficulty:
Easy
Repair Time:
Less than 30 mins
It took 2 months to get my order of small parts
by David

Order Review

Repair Difficulty:
Easy
Repair Time:
Less than 30 mins
Still waiting for some parts, the rest of the order came after I called. Parts were as advertised and worked good
by Lynn

Order Review

Repair Difficulty:
Easy
Repair Time:
Less than 30 mins
I won't be ordering from you again. Please send the rest of my order. My fuel line still hasn't arrived.
by Michael

Order Review

Repair Difficulty:
Easy
Repair Time:
Less than 30 mins
Unfortunately, it was a poor experience with order 250491. It covered 30 items, 59 articles at a cost of $696.39. First Crowlwey told me that are waitng for ten articles to complete the order and then ship in one package. I received a unexpected box with 3 gaskets that DIDN'T BELONG TO THE ORDER. After claims were found and shipped the 10 articles that were waiting for. Crowley maitained the the point that the 3 gaskets were the 20 articles missing, but never explained why shipped splitted in two shippins when the agreement was one and where are my 20 lost articles and my money. IT WAS GREAT DISORDER AND A REAL DISASTER
by Guillermo

99 Evinrude 70HP 4-stroke

Repair Difficulty:
Easy
Repair Time:
Less than 30 mins
Still waiting on one part that when I ordered was told it was in stock. Also, $8 for an O ring. Sure, I get it, nothing is free but I would rather see a realistic price and be told there's a minimum charge for any order. Also, there may be value in grouping items into repair kits. I ordered water intake screens and had to order individual screens, screws and nuts. Logically, that should be a kit.
by Anthony
Problem fixed: broken water intake screen
Water intake screen was broken and vibrating causing water and air to be taken into the cooling system. Waiting on the second screen to arrive to affe …
ct the repair.

Mercury Mecruiser 250HP I.O.

Repair Difficulty:
Repair Time:
More than 4 hours
Their parts breakdowns are very good, but in my particular application, they were not all the correct part #s. Their pricing is very reasonable. Trying to get a real parts person to help you on the phone with the right part selections can take a while. All in all, I would definitely order from them again.
by dave
Problem fixed: complete tune up, oil change, impeller replacement, fuel system clean out, new belt, and other general maintenance items.
Work done at a service repair center.

Yamaha

Repair Difficulty:
Easy
Repair Time:
30 to 60 mins
I get all my Yamaha parts parts at Crowley. The guys are super helpful.
by John

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.