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Mercury 200-300 HP 3L XS/ Pro Optimax Rebuild Kit 100-51-115 842986T0 .015 3.640

Marsoni M251S
Sale price$769.39
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Get it in 3 business days with 1 day shipping. Friday, May 29
Mercury 200-300 HP 3L XS/ Pro Optimax Rebuild Kit 100-51-115 842986T0 .015 3.640WSM Mercury 200 300 Hp 3. 0L XS Pro Optimax Rebuild Kit . 015 size pistons starboard and port 3. 640" Fully Machined Hypereutectic Cast Alloy Hard Coat Anodized Piston Tops Resisting Temperatures up to 1560`F T6 Heat Treated Hardness HV280 400 Plasma Moly Coated Rings Full Floating Wrist Pin This kit meets or exceeds OEM specifications. Kit Includes: Six Brand New High Quality WSM Pistons, rings, pins and clips, complete gasket kit, upper, center and
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
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4.6 ★★★★★
Based on 1261 reviews
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Product Reviews
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Verified Purchase
S. C.
Lowell, US
★★★★★ 5
Exact Replacement Plus a Few Extra Parts Dependent on the Model of Outboard
Worked great for my 2005 200hp Optimax Outboard.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 20, 2025
C
Verified Purchase
caveman
Dallas, US
★★★★★ 5
Good product
It was as advertised. It came when it should have.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 12, 2025
M
Verified Purchase
Michael McCoy
Natrona Heights, US
★★★★★ 5
Quality Wire.
Size: 2 Colors each 10FT, Style: 10AWG
I bought the wire to complete a wiring job on my Miata, great quality would recommend.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 22, 2026
E
Verified Purchase
Electromag50
West Palm Beach, US
★★★★★ 5
Flexible, maybe not UV rated
Size: 2 Colors each 5FT, Style: 10AWG
This wire is extremely flexible. My only concern is that it may not withstand UV. Nowhere on the insulation does it indicate that it is for solar.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 16, 2026
G
Verified Purchase
GEORIGA
Carnegie, US
★★★★★ 5
Nice
Size: 2 Colors each 5FT, Style: 10AWG
Great product and description is on point.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 18, 2026

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