


WSM Mercury 20-50 Hp Cross Flow Power Head Rebuild Kit - 100-05-10 STD SIZE
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
WSM Mercury 20-50 Hp Cross Flow Power Head Rebuild Kit - 100-05-10 STD SIZEITEM#: 100 05 10 sTANDARD SIZE PISTONS (2. 565") POWERHEAD REBUILD KIT: MERCURY MARINER 20 50 HP CROSSFLOW 72 97 BRAND: WSM WSM Mercury 20 50 Hp Power Head Rebuild Kit This kit meets or exceeds OEM specifications. Kit includes everything you need to re build your outboard engine. 4 Brand New High Quality WSM Pistons, 4 rings, pins and clips, complete gasket kit, upper, main and center crank bearings, 4 upper and lower rod bearings and 8 rod bolts
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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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★★★★★ 5
Best full synthetic oil I ever used.
This oil I use in my outboard and I also buy another wt oil for my car. My cars mileage went up 2-3 consistent MPG on the digital mileage counter and use in my 2020 Merc 40hp and the outboard runs smoother and oil stays clean longer. Confident in this oil better than re-branded oils and higher cost. This oil exceeds by far manufactures oil ratings. Use high quality oil filters also.
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Reviewed in the United States on January 15, 2023
★★★★★ 5
Good stuff!
Yamaha F150 running great!
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Reviewed in the United States on August 11, 2021
★★★★★ 5
Excellent quality
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Reviewed in the United States on December 24, 2025
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Boating maintenance
Perfect replacement parts for your scheduled maintenance, great price
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Reviewed in the United States on December 25, 2025
★★★★★ 5
worked great at fair price
works fine on my 1994 volvo penta 3.0 GL the main gasket was wrong, but my 3.0 GL does not have a gasket, the other parts appear to be universal
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Reviewed in the United States on June 5, 2025