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Description
Sea-Dog Stainless Steel Chain Stopper - 3/16" - 1/4" [321820-1]Stainless Steel Chain Stopper 3 16" 1 4" Chain Stoppers help prevent damage to the windlass and reduce the risk of accidental free fall of the anchor while under way. Chain Stoppers mount alone or inside most bow rollers and work with your anchor roller to take tension off your windlass. Chain and rope should be secured at anchor when your windlass is not in use to avoid high loads the windlass was not designed for. 321820 fits chain sizes 3 16" 1 4".
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- Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
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4.1 ★★★★★
Based on 1384 reviews
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Product Reviews
★★★★★ 5
Must have.
Size: 150 ml, Pack of 1
Very good product, works great.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 7, 2026
★★★★★ 5
Good for routine engine care
Size: 150 ml, Pack of 1
Definitely not a cure-all for major mechanical problems, but it works well as a preventative step. It helps lessen deposits and keeps the engine running smoothly. I intend to use it regularly as part of my maintenance schedule to keep everything in good shape.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 21, 2026
★★★★★ 5
Worth the money
Size: 150 ml, Pack of 1
Great line of car products. My BMW gets better gas mileage when I use it regularly.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 1, 2026
★★★★★ 4
Easy valve cleaning for the engine
Size: 150 ml, Pack of 1
Just tried the LIQUI MOLY Valve Clean in my car. added it to my fuel, and it seems to help keep things running smoothly. it's handy to have on hand for maintenance, especially when I want to avoid engine issues. it works well in my daily drive and is pretty simple to use. glad i picked this up.
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Reviewed in the United States on May 5, 2026
★★★★★ 5
Fine product
Size: 150 ml, Pack of 1
This one works
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Reviewed in the United States on May 24, 2026
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