★★★★★ 5
Good quality
Appeared to be better quality than the origional.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 16, 2026
WSM Mercury 115-150 Hp 2.5L Optimax Powerhead Rebuild Kit 100-28-10, 858790Y2
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
WSM Mercury 115-150 Hp 2.5L Optimax Powerhead Rebuild Kit 100-28-10, 858790Y2WSM Mercury 115 150 Hp 2. 5L Optimax Power Head Rebuild Kit O ringed Head Use with 644 rods This kit meets or exceeds OEM specifications Kit includes everything you need to re build your outboard engine 6 Brand New High Quality WSM Pistons, 6 rings, pins and clips, complete gasket kit, upper, lower and center main crank bearings, 6 upper and lower connecting rod bearings and 12 rod bolts Piston Bore 3. 501" Piston OE # 858789A4, 858789T2, 858790A4,
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- Fast: 2-3 business days
- Express: 1-2 business days
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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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