Sea Foam Marine Pro Fuel Treatment for Marine Engines, 20 oz
Sea Foam Marine Pro Fuel Treatment for Marine Engines, 20 oz
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Sea Foam

Sea Foam Marine Pro Fuel Treatment for Marine Engines, 20 oz

4.8 stars out of 351 reviews
(4.8)|
351 ratings
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Pack Size:Single

Key item features

  • Comprehensive Cleaning: Add to fuel to clean fuel injectors and carburetor jets
  • Engine Lubrication: Cleans and lubricates critical upper engine areas
  • Wear Reduction: Helps reduce long-term engine wear
  • Corrosion Prevention: Helps prevent corrosion caused by ethanol and water
  • Fuel Stabilization: Stabilizes tank fuel up to 2 years
  • Universal Compatibility: Safe for all 2- and 4-stroke gasoline marine engines, inboard & outboard
  • Lightweight Design: Assembled Product Weight: 1.09 lb
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was $16.99
69.7 ¢/fl oz
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Customer ratings & reviews

4.8 out of 5 stars
stars351 ratings252 reviews
How item rating is calculated
  1. 5 stars92% (323)
  2. 4 stars4% (15)
  3. 3 stars1% (3)
  4. 2 stars1% (2)
  5. 1 star2% (8)

Reviews summary

Pros
  • : Requires minimal effort to use.
  • : Effective in boats and other vessels.
  • : Offers affordable fuel system maintenance options.
  • : Restores and maintains motor function.
  • : Provides more engine power and efficiency.
Neutral
  • : Can be smooth, but may be rough or inconsistent.
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Showing 1-3 of 252 reviews

Mar 26, 2026
CJ
Item details
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

Awesome Jack!!

Excellent boat jacket! The quality is outstanding—durable, comfortable, and built to handle tough conditions on the water. It fits perfectly, keeps me warm without feeling bulky, and the materials feel premium. You can tell it's made to last. Highly recommend for anyone who wants reliability and style out on the boat!

Helpful?401BNF0WNWMH558344202
Mar 23, 2026
David
Item details
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

seafoam is great. I use it in my boat and my truck when I store them

Helpful?401BNF0WNWMH558344202
Sep 13, 2025
Walmart customer
Top Reviewer
Item details
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

Seaaaaaaafoam!

Always dump a can in before winterizing my jet ski. Stabilizes the fuel and helps it start up first time every year.

Helpful?401BNF0WNWMH558344202