★★★★★ 5
Quality for the price
All necessary parts good quality
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 16, 2026
WSM Engine Coupler Mercruiser / OMC/ Volvo - 18-21751, 3853962, 3853962-3, 98390
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
WSM Engine Coupler Mercruiser / OMC/ Volvo - 18-21751, 3853962, 3853962-3, 98390Item#: 18 21751 Engine Coupler Mercruiser OMC Volvo OEM#: 3853962, 3853962 3, 983902, 986338 Brand: Sierra FITMENTS: Make Model Year(s) OMC I O ALL Volvo Penta ALL
Quick Dispatch:
Your WSM Engine Coupler Mercruiser / OMC/ Volvo - 18-21751, 3853962, 3853962-3, 98390 orders ship within 1-2 business days.
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- Standard: 3-7 business days
- 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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Based on 723 reviews
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Product Reviews
★★★★★ 5
quality
prefect fit, best pricing over local outlets wanting twice as much
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 19, 2026
★★★★★ 3
Ok
Not bad not great. Quality feels cheap.
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Reviewed in the United States on December 30, 2025
★★★★★ 5
Lower unit water pump
Worked fine
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Reviewed in the United States on October 16, 2025
★★★★★ 5
Great value and working started
Great starter. I had ordered a cheaper option before this and it just hold up. When this one arrived I could tell I made the right decision right out of the box. It looked, felt and worked like the OEM one. No shims just a good working starter. Spend a few extra bucks and save time.
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Reviewed in the United States on May 24, 2026
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