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Mercury 200 -300 HP DFI EFI XS Reed Block Gasket 27-841220, 850283, 516-40-01

Marsoni M251S
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Mercury 200 -300 HP DFI EFI XS Reed Block Gasket 27-841220, 850283, 516-40-01ITEM#: 516 40 01 REED BLOCK GASKET: MERCURY MARINER 200 300 HP DFI EFI XS OEM#: 27 804680, 27 841220, 27 850283, 850283 BRAND: WSM FITMENTS: Make Model Year(s) Mariner ALL Mercury 6 Cyl 3. 625 Bore 3L EFI 200 2002 2008 Mercury 6 Cyl 3. 625 Bore 3L EFI 225 2002 2008 Mercury 6 Cyl 3. 625 Bore 3L EFI 250 2002 2008 Mercury 6 Cyl 3. 6265 Bore 3. 2L XS 300 2006 2017 Mercury 6 Cyl 3. 6265 Bore 3L Optimax 200 2000 2018 Mercury 6 Cyl 3. 6265 Bore 3L Optimax
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Verified Purchase
mom12195
Battle Creek, US
★★★★★ 5
Great
Needed one for my mower, got a box of 2. Works great!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 20, 2026
J
Verified Purchase
James
Alexandria, US
★★★★★ 3
Didn’t work well in my B&S engine
Worked for 15 minutes. Repeatedly stalled. Replaced with name brand and ran like new. UPDATE. Seller immediately offered refund well outside refund window of opportunity. That’s nice to have someone stand behind their product
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Reviewed in the United States on May 9, 2026
D
Verified Purchase
Dawn Blomenkamp
Grantham, US
★★★★★ 5
Lawnmower sparkplug
Worked great, easy to install, fast replacement. And 2 for the price of one.
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Reviewed in the United States on April 8, 2026
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Verified Purchase
Amazon Customer
Charlottesville, US
★★★★★ 5
Perfect replacement part
Perfect replacement
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Reviewed in the United States on April 29, 2026
K
Verified Purchase
Karen C
Bozeman, US
★★★★★ 5
Quality Champion Brand plugs
Repeat customer. Quality Champion product worth the extra $
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Reviewed in the United States on April 12, 2026

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