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Piston Kit Mercury 150-225 Hp 2.4L Port Side .010 3.385" 100-10-04PK 766-8666A3

Marsoni M251S
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Piston Kit Mercury 150-225 Hp 2.4L Port Side .010 3.385" 100-10-04PK 766-8666A3ITEM#: 100 10 04PK PISTON KIT MERCURY MARINER 150 225 HP 2. 4L 78 91 PORT . 010 OVER 3. 385" BRAND: WSM DETAILS: CAST IRON HOLE FITMENTS: Make Model Year(s) Mariner ALL Mercury 6 Cyl 3. 375 Bore 2. 4L 175 1981 1982 Mercury 6 Cyl 3. 375 Bore 2. 4L 200 1978 1982 Mercury 6 Cyl 3. 375 Bore 2. 4L 225 1980 1981 Mercury 6 Cyl 3. 375 Chrome Bore 2. 4L 175 1983 1991 Mercury 6 Cyl 3. 375 Chrome Bore 2. 4L 200 1983 1990 Mercury 6 Cyl 3. 375 Steel Bore 2. 4L XR 4
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4.9 ★★★★★
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carlos febus
Draper, US
★★★★★ 5
Good
Good
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 27, 2026
W
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Will Rhoden
Natrona Heights, US
★★★★★ 5
Works as it should
Works as it should
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Reviewed in the United States on March 24, 2026
K
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kelly napper
Pawtucket, US
★★★★★ 4
Four Stars
Just what I needed
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Reviewed in the United States on October 14, 2016
P
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Paul Schneeman
Natrona Heights, US
★★★★★ 5
Functioned as advertized.
Installed these in my Whalers 96 200 Offshore. No issues, used permatex gasket compound on aluminum engine parts after cleaning with fine brass wire wheel.
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Reviewed in the United States on November 20, 2024
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george mitchell
Carnegie, US
★★★★★ 5
Fits 1988 Sea Ray V-135 2 stroke (Mercury)
For those of you with the 135 hp mercury that was branded as the "Sea Ray 135" and paint matched to the boat (i.e. Seville's and some others) this is the 147 degree thermostat for that motor. My Seville is an '88 and It's difficult to cross reference the serial numbers on those motors when searching for parts. Only buy Quicksilver parts for these motors. Happy to find them on Amazon because Boats.net as an example, is not clear on what you're getting.
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Reviewed in the United States on August 3, 2024

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