WSM Mercury 20-50 Hp Cross Flow Piston kit '72-'97, STD 100-05K, 743-5172A6

WSM Mercury 20-50 Hp Cross Flow Piston kit '72-'97, STD 100-05K, 743-5172A6

Marsoni

M251S

$86.96

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

WSM Mercury 20-50 Hp Cross Flow Piston kit '72-'97, STD 100-05K, 743-5172A6Piston Kit: Mercury 20 50 Hp Cross Flow Hp STD Only STD Size Only ITEM#: 100 05K PISTON KIT: MERCURY MARINER 20 50 HP CROSSFLOW 72 97 STANDARD OEM#: 743 5172A6, 780 9229A7 NOTE: 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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I have used these for years during the winter. The price has nearly tripled but the longevity is the same. I normally purchase three with one being a spare. Within a few weeks they start going. I switch batteries etc but normally that does not help. Its a great idea and my dogs love them but they dont hold up to 10 minutes of play each nite. We do not throw them either, I roll them or kick them as my dogs are older

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Reviewed in the United States on November 12, 2025

Verified Purchase

Mitchell LaForest

Carnegie, US

★★★★★ 5

Great product

Very good. Hours of fun with the dog.

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Reviewed in the United States on March 3, 2026

Verified Purchase

Krispy