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Marine Fuel Additives

      • Starbrite Star Tron Stabilizer+ Fuel Storage 8 oz
        $7.46
        $6.49

        Starbrite Star Tron Stabilizer+ Fuel Storage  Ensure your fuel quality during storage with Starbrite's Star Tron Stabilizer+ Fuel Storage. This fuel additive is not only perfect for stored boats, but can also be used in motorcycles, lawn equipment,...

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      • Sta-Bil Diesel Fuel Stabilizer
        $31.91
        $23.99

        Sta-Bil Diesel Fuel Stabilizer - 32oz Sta-Bil Diesel Fuel Stabilizer is a diesel additive that keeps fuel fresh for quick, reliable starts and maximized engine performance. This formula is designed for use with all diesel engines, and all diesel fuels...

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      • Evinrude Injection Valve and Hose Assembly Adapter
        $9.49
        $5.99

        Evinrude Injection Valve and Hose Assembly Adapter Features: Valve and hose ONLY for use with tuner 0777185 or with fogging oil 0777186 Screws right onto the schrader valve on Johnson and Evinrude outboards. Replaces: 0763644

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      • Mercury - Mercruiser 92-8M0058691 Quicklen 32 oz
        $33.49
        $28.99

        Mercury - Mercruiser 92-8M0058691 Quicklen 32 oz. Genuine OEM Mercury-Mercruiser part. Mercury Quickleen is for use as needed throughout the boating season. Aggressive cleaners work to quickly and thoroughly remove carbon deposits from carburetors...

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      • Sta-Bil Marine Tune-Up Fuel Treatment
        $13.26
        $9.97

        Sta-Bil Marine Tune-Up Fuel Treatment Marine Tune-Up by Sta-Bil is a fuel treatment designed to clean carbs and injectors. The special formula is compatible with all gas marine engines and quickly resolves rough-running engines by dissolving varnish and...

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      • Quicksilver Precision Care QuickStor Fuel Stabilizer
        $20.39
        $16.99

        Quicksilver Precision Care QuickStor Fuel Stabilizer QuickStor Fuel Stabilizer helps prevents regular and ethanol-blended fuel from breaking down and oxidizing. This fuel stabilizer also prevents gum and varnish from forming in the fuel and settling in...

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      • Sierra eGuard Ethanol Fuel Treatment - 1 Gallon
        $76.49
        $57.99

        Sierra 18-9777 eGuard Ethanol Fuel Treatment (1 Gallon) - Sold in Increments of 4 Sierra 18-9777 eGuard Ethanol Treatment is sold in increments of four - minimum order quantity is (4) 1 gallon bottles. Features: Stabilizes E10 gasoline for up to 12...

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      • Mercury Storage Seal Fogging Oil
        $19.99
        $12.49

        Mercury Storage Seal Fogging Oil Mercury Storage Seal forms a protective barrier that prevents rust on internal metal surfaces. It also keeps cylinders lubricated to prevent cylinder or piston damage when starting your engine after storage...

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      • Sierra 18-9080 Universal Fuel Stabilizer - 1 Gallon
        $55.99
        $39.49

        Sierra 18-9080 Universal Marine Fuel Stabilizer - 1 Gallon Sierra's 18-9080 Universal Marine Fuel Stabilizer promotes quick starting and keeps your boat's carburetor and fuel system clean.  Features: Universal Promotes quick starting Keeps...

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      Marine fuel stabilizer

      Why Shop at Wholesale Marine for Fuel Additives?

      If you need to keep your fuel fresh and your engine protected, Wholesale Marine makes it simple. Here’s why boaters trust us for their marine fuel additives and treatments:

      • Free Shipping Over $99 on qualifying orders, so you can stock up on all your winterization essentials.
      • Low Price Guarantee to ensure you get the best marine fuel stabilizer at the right price.
      • 90-Day Returns for stress-free shopping if your plans or storage needs change.
      • Captain’s Club Rewards to earn points on every purchase and save on future projects.

      Fuel Treatments That Keep Boats Running Strong

      Your engine doesn’t care how long your boat’s been sitting; it just needs clean, stable fuel when it’s time to fire up. That’s where the right marine fuel additive makes all the difference. Whether you're prepping for winter or keeping things running smoothly between trips, Wholesale Marine carries fuel stabilizers built for the long haul. Check out these popular picks for boaters:

      With one of the widest selections online, we make it easy to find the best fuel stabilizer for boats so you can store your vessel with confidence.

      Benefits of Marine Fuel Stabilizers for Storage and Performance

      Ethanol-blended fuel may work fine on the road, but it’s tough on boats. A quality marine fuel stabilizer protects against phase separation, corrosion, and buildup that can leave you with clogged lines and rough starts come spring. Pairing your winterization routine with the best marine fuel stabilizer means fresher fuel, cleaner injectors, and a smoother-running engine when it’s time to get back on the water.

      Pro Tips:

      • Add your marine fuel additive before topping off your tank to ensure proper mixing.
      • If your boat will sit for several months, choose a marine fuel treatment designed for long-term storage. It keeps your fuel fresh and your system protected.

      Prepare Your Boat for Storage with Wholesale Marine

      Don’t let stale fuel or ethanol damage take the fun out of boating season. Stock up on the best marine fuel stabilizer today and protect your tank, lines, and engine during storage.

      Buy your marine fuel treatment or boat fuel additive today with our Low Price Guarantee!

      Marine fuel treatment
      Fuel stabilizer for boats

      Frequently Asked Questions About Marine Fuel Stabilizers

      Confused about which marine fuel treatment or boat fuel additive is right for your setup? Here are some quick answers to help you make the right choice for your boat and storage needs.

      How does a marine fuel stabilizer protect my boat?

      A marine fuel stabilizer keeps gas from breaking down, prevents phase separation in ethanol blends, and adds corrosion inhibitors to protect your tank, lines, and injectors during storage.

      Can I use the same fuel stabilizer for ethanol and non‑ethanol gas?

      Yes. Many marine fuel additives are formulated for use in both ethanol‑blended and non‑ethanol fuels. Always check the label to confirm compatibility with your engine and fuel type.

      When should I add a boat fuel additive?

      Add your boat fuel additive before topping off your tank. This ensures the stabilizer mixes thoroughly with the fuel, giving you full protection during storage.