WSM Gasket, Reed Block Mercury / Mariner 200 / 300 Hp - 516-27-01, 27-12775

WSM Gasket, Reed Block Mercury / Mariner 200 / 300 Hp - 516-27-01, 27-12775

Marsoni

M251S

$16.47

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

WSM Gasket, Reed Block Mercury / Mariner 200 / 300 Hp - 516-27-01, 27-12775Item#: 516 27 01 Gasket, Reed Block Mercury Mariner 200 300 Hp OEM#: 27 12775, 27 127751, 27 127752, 27 127753, 27 127754 Brand: WSM FITMENTS: Make Model Year(s) Mariner ALL Mercury 6 Cyl 3. 375 Bore 2. 4L 200 1978 1982 Mercury 6 Cyl 3. 375 Chrome Bore 2. 4L 200 1982 1988 Mercury 6 Cyl 3. 501 Bore 2. 5L EFI 200 1991 1999 Mercury 6 Cyl S3000 Race 300 1996 2004

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Ran this for 5k and did oil analysis. It performed identically to Mobil 1 ESP 5w30. No issues, stayed in grade, nothing negative. That said, it was no better than ESP and wear metals were functionally the same as multiple other similar rated oils. It’s perfectly fine, but not better. It’s a great value. I wouldn’t use it for extended oil change intervals. No oil consumption noted.

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Reviewed in the United States on March 23, 2026

Verified Purchase

Carol

Phoenix, US

★★★★★ 5

Great oil

Size: 1 Quart Pack of 6

Love it.

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Reviewed in the United States on April 18, 2026

Verified Purchase