★★★★★ 5
Good
Good
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Reviewed in the United States on April 27, 2026
SIERRA IGNITION SWITCH MERCURY / MARINER 15 - 30 HP 01-06 - MP51090, 87-17009A2
Marsoni
M251S
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Friday, May 29
SIERRA IGNITION SWITCH MERCURY / MARINER 15 - 30 HP 01-06 - MP51090, 87-17009A2ITEM#: MP51090 IGNITION SWITCH MERCURY MARINER 15 30 HP 01 06 OEM#: 87 17009A2, 87 17009A5 BRAND: SIERRA FITMENTS: Make Model Year(s) Mariner ALL Mercury 18 2002 2004,2006 Mercury 2 Cyl 2. 562 Bore Mercosil Block 15 2001 2006 Mercury 2 Cyl 2. 562 Bore Mercosil Block 25 2002 2006 Mercury 2 Cyl 2. 992 Bore 30 2001 2006
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4.7 ★★★★★
Based on 493 reviews
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Product Reviews
★★★★★ 5
Works as it should
Works as it should
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 24, 2026
★★★★★ 4
Four Stars
Just what I needed
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Reviewed in the United States on October 14, 2016
★★★★★ 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
★★★★★ 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
