Mr Alpha Housing Plug - 18-3232-9 - Sierra
Price: $4.95
Save: $1.50
(23% Off $6.45)
Part # 18-3232-9
Replaces OEM part #
  • MERCURY MARINE 19-47579
Package of 5
For: Mercruiser MR ALPHA
Average Customer Review for Mr Alpha Housing Plug - 18-3232-9 - Sierra
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Alpha Plug
by Gary from Onarga, Illinois on August 25, 2015
Very happy with the quality of this product.
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Housing Plug for Mercruiser
by Stanley from Linden, Alabama on October 26, 2014
Lost plug while in storage, plug fit perfectly.
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Housing plug
by Stan from Vancouver, Washington on September 08, 2014
They sent me four of the wrong size plugs and shorted me on the end caps that I ordered, only received 2 end caps and wanted 4.
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Hello, I have a 1995 Alpha 1 outdrive. Quicksilver P/N 19-47579 is about 1/3 too small for the hole in my outdrive. Is there an alternate larger plug? Thanks?
Unfortunately, we do not have anything larger than this. We suggest posting a question on our Forum page. Thousands of boaters visit there every day and may be able to assist you in finding a housing plug that matches your requirements. The Forum can be found at
I have found another part number that may be the larger plug. Quicksilver P/N 19-32297 seems to be similar and is also called out for some Alpha 1 drives.

When I look up the part number for this item 18-3232-9 it shows quantity of 5 on all the other websites. Is this a 5 pack of plugs?
Yes this is sold in a package of 5.

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