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Mercury 200-300 HP 3.0L XS Optimax Rebuild Kit 100-51-10, 842986T03 STD 3.625"

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 3.0L XS Optimax Rebuild Kit 100-51-10, 842986T03 STD 3.625"WSM Mercury 200 300 Hp 3. 0L XS DFI Optimax Rebuild Kit STD size pistons starboard and port 3. 625" 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. Includes: Six Brand New High Quality WSM Pistons, rings, pins and clips, complete gasket kit, upper, center and lower
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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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4.4 ★★★★★
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Shouka
Fort Morgan, US
★★★★★ 5
It was a good fit
It was a good quality Thanks
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 13, 2026
J
Verified Purchase
JB
Whiting, US
★★★★★ 5
DIY forget the dealer
DIY value
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 25, 2026
M
Verified Purchase
Mike
Phoenix, US
★★★★★ 5
Works
Decent quality, somewhat flimsy, not bad for the price. Fit perfectly, correct thickness.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 17, 2025
B
Verified Purchase
Brienne
Alexandria, US
★★★★★ 5
great and the price is right
Fits perfectly and was very reasonable compared to the Oil change place.
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Reviewed in the United States on December 25, 2025
B
Verified Purchase
balmos
Port Orchard, US
★★★★★ 5
Good product
It fits like it is supposed to.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 19, 2025

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