WSM Mercury 20-50 HP X flow Piston Kit 100-05k STD SIZE ONLY 2.565

WSM Mercury 20-50 HP X flow Piston Kit 100-05k STD SIZE ONLY 2.565", 743-5172A6,

Marsoni

M251S

$86.96

Get it in 3 business days with 1 day shipping. Friday, May 29

WSM Mercury 20-50 HP X flow Piston Kit 100-05k STD SIZE ONLY 2.565", 743-5172A6,ITEM#: 100 05K PISTON KIT MERCURY MARINER 20 50 HP CROSS FLOW 72 97 STANDARD OEM#: 743 5172A6, 780 9229A7 2. 565" BRAND: WSM FITMENTS: Make Model Year(s) Mariner ALL Mercury 2 Cyl 2. 565 Bore Cross Flow 20 1972 1979 Mercury 4 Cyl 2. 565 Bore Cross Flow 40 1989 1997 Mercury 4 Cyl 2. 565 Bore Cross Flow 50 1970 1985 NOTE: 2. 565"

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This is a good product. Many people go with KILMAT because of the value to price point. I did as well. When you clean the surface (in my case it was all painted metal) this stuff sticks very well. I do recommend you use a seam roller of some type, I used Lumiteco 3 piece roller set. This will help with adhesion and mostly flatten the overlapped edges. It also helps you see where you have rolled as it leaves little grooves. The difference when we had no sound mats and after was very impressive. We haven't finished our install yet and it is quieter than when we had an interior in the van. There are thicker mats available in other brands, but this will work great for our van build, but this helps keep the weight down. It is quality material, just be careful when you are removing the backing, the edge of the foil face can cut you. I suggest you layout where you are installing the mat and cut to fit. From what I have read, you don't need to cover every inch in the vehicle, just spot install for a big difference. I chose to cover most surfaces to help keep sound out when we are sleeping in the van. We haven't finished putting the van yet, but we have driven it around and been very satisfied with this product.

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Reviewed in the United States on December 3, 2025