


WSM Mercury / Mariner 65-125 Hp Thermostat Gasket 540-27, 27-43006-8, 27-43004A9
Marsoni
M251S
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Friday, May 29
WSM Mercury / Mariner 65-125 Hp Thermostat Gasket 540-27, 27-43006-8, 27-43004A9ITEM#: 540 27 GASKET, THERMOSTAT MERCURY MARINER 65 125 HP 99 05 OEM#: 27 430068 BRAND: WSM FITMENTS: Make Model Year(s) Mariner ALL Mercury 3 Cyl 3. 500 Bore Looper 75 1999 2005 Mercury 3 Cyl 3. 500 Bore Looper 90 1999 2005 Mercury 3 Cyl 65 1999 2005 Mercury 4 Cyl 3. 500 Bore Looper 100 1999 2000 Mercury 4 Cyl 3. 500 Bore Looper 115 1999 2005 Mercury 4 Cyl 3. 500 Bore Looper 125 1999 2005 Mercury 4 Cyl Jet 80 1999 2005
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★★★★★ 3
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The part appears decently made in China. The end that terminates below the oil filter would not mount (too tight). I gently sanded the o-ring groove, lubricated and I put the part in freezer. After two hours of sanding the groove I got the part seated. Good thing I was patient today. Pain in the butt.
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Reviewed in the United States on December 12, 2020
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Reviewed in the United States on March 1, 2026
★★★★★ 5
good quality
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Reviewed in the United States on December 29, 2025
★★★★★ 5
Great price Great product
Great price Great product
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Reviewed in the United States on February 27, 2026
★★★★★ 5
Perfect fit.
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Reviewed in the United States on August 31, 2025