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WSM Piston Kit Mercury / Mariner 135 - 200 Hp 90-91 Starboard STD - 100-19SK

Marsoni M251S
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WSM Piston Kit Mercury / Mariner 135 - 200 Hp 90-91 Starboard STD - 100-19SKItem#: 100 19SK Piston Kit Mercury Mariner 135 200 Hp 90 91 Starboard Standard Note: 3. 500" Bottom Guided Details: Use with connecting rod #636 Brand: WSM FITMENTS: Make Model Year(s) Mariner ALL Mercury 6 Cyl 3. 125 Bore 2L 135 1990 1991 Mercury 6 Cyl 3. 125 Bore 2L 150 1990 1991 Mercury 6 Cyl 3. 375 Chrome Bore 2. 4L 175 1990 1991 Mercury 6 Cyl 3. 375 Steel Bore 2. 4L XR 4 150 1990 1991 Mercury 6 Cyl 3. 501 Bore 2. 5L 200 1991 Mercury 6 Cyl 3. 501
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4.6 ★★★★★
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M. Chulick
Battle Creek, US
★★★★★ 4
Delivered quickly
Size: 16 Fl Oz (Pack of 1), Style: Individual
Just trying to keep my small engines running with this awful California fuel
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 4, 2025
S
Verified Purchase
Shopper scott
Whiting, US
★★★★★ 5
Good buy
Fit great. I have a toro 7.25 Brigs & Stratton 21 icnh rececyler. Mower started up great
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 8, 2026
R
Verified Purchase
Robert Edwards
Bozeman, US
★★★★★ 5
Good Product
Works great
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Reviewed in the United States on April 26, 2026
M
Verified Purchase
MARC FOSTER
Cuba, US
★★★★★ 5
Worked perfectly
Excellent product
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Reviewed in the United States on April 26, 2026
K
Verified Purchase
KT
Dallas, US
★★★★★ 4
Check the gap!
Plugs work great. I will say for those reviews saying they got a dud. CHECK THE GAP!!! Both plugs were not at 0.030 as advertised. I gapped the plug and it worked perfectly.
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Reviewed in the United States on April 7, 2026

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