MAD SAVINGS! on over 15,000 items.
Shop the 7th Annual Boating Madness Sale

Mercruiser Housing Plugs

Save 35% Off.
Mr Alpha Housing Plug - 18-3232-9 - Sierra
Madness Sale Price: $3.59
Save: $1.98
(35% Off $5.57)
Part # 18-3232-9 ValueShip™ Eligible
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
Full StarFull StarFull StarEmpty StarEmpty Star Based On 2 Reviews | Write Review
Full StarFull StarFull StarFull StarFull StarHousing Plug for Mercruiser
by Stanley from Linden, Alabama on October 26, 2014
Lost plug while in storage, plug fit perfectly.
Was this review helpful?
Full StarEmpty StarEmpty StarEmpty StarEmpty StarHousing 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.
Was this review helpful?
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.
Ask a question for
Question & Answer Guidelines
This product ships in 1 business day.

Add to Cart and enter your Postal Code to determine the shipping charges and estimated delivery date.
* Most products and orders leave our warehouse in 1 business day. However, select items may take more processing time. Alaska and Hawaii orders please add 1 additional warehouse processing day.
Standard Shipping Policies
CRAZY SAVINGS! Now's the time to Grab New Gear - Pocket More Savings.