Home SHOP Marine Fuel Systems Fuel Additives & Cleaners

20 products

  • Free Shipping

    Free Ground Shipping - Most Orders over $99 shipped to continental United States. *Exclusions apply.

  • Installment Payments Available

    Pay In 4 - Interest Free Payments!

    See Details at Checkout.

  • Shop Confidently!

    Quality marine engine & drive parts

    since 2006

Let customers speak for us

from 87 reviews
Great Stuff

Great Stuff Use it Every Winter

Anonymous
STA-BIL Storage Fuel Stabilizer - 8 oz | Sta-bil 22208
Would have been 5 stars but....

Would have been 5 stars but, I did not receive a promotional sticker with my $2000 drive unit. Just kidding, everything was great!

William S.
Engine Oil Synthetic Blend XPS 5W-40 4T, Quart | Evinrude/Johnson 0779434

Fast track to Germany…

Oliver F.
Crusader Line,Fuel Filter/Tbi In 98344
Excellent product and Communication

Ordered aftermarket power pack for my 55hp Johnson. Received email and text offering OEM part at aftermarket price. Absolutely great! Thanks!!!

Greg M.
Power Pack Screw Terminal No RPM Limit 2 Cylinder | CDI 113-1397
Crusader parts

Great company to work with!

Tom B.
Gasket Exhaust Elbow 3 Hole | Crusader 96108

Ordered a Piranha Propellers Complete A-Series 4 Blade Propeller from Macomb Marine Parts and even though we’re international, it arrived in just over a week — fast and reliable service. The propeller itself is a real lifesaver. We had the same model before, and after hitting a rock that damaged two blades, we were able to swap them right on the water and make it back to the marina without issue — something you simply can’t do with a regular aluminum prop. For peace of mind we decided to buy a complete new set (hub and blades) since an impact like that could cause hidden damage, but the system really proved its worth.

Alexiel M.
Piranha Propellers Complete A-Series 4 Blade Propeller

3 in. Exhaust Elbow | Pleasurecraft R029001

Randolph D.
3 in. Exhaust Elbow | Pleasurecraft R029001

Excellent part.

Nelson R.
5" x 4" x 4" Air Divider Adapter Y | MSI Marine AY544
Piranha Propeller

I couldn’t find a Piranha propeller dealer near me in Canada but found Macomb Marine Parts who could deliver to me. The order process was smooth and I was even contacted via email for clarification regarding blade shape and they were very helpful in choosing the best shape for my purposes.
I can’t comment on the prop’s performance yet as we haven’t had the boat in the water yet.

S.S.
Piranha Propellers Propulsion Kit A-Series 4-Blade

Perfect replacement. thank you

MICHAEL W.
Strainer Transparent Cylinder 1/2 in. | Perko 049300499C

Perfect replacement

Michael K.
Chesapeake White Fuel Level Gauge | Faria 13801
Perfect match

Perfect match to the original Chris Craft blue. Competitive price and delivery was quick

jason b.
Spray Paint Color Vision Chrysler Blue | Moeller 025340
Great Product

Great Product, easy to install, work well

Kevin M.
Boat Buckle Rodbuckle Gunwale/Deck Mount Tie Down F14200
Magnesium anode for a 1994 OMC Cobra (SX-C) transom shield

Obtaining magnesium anodes to install on the OMC Cobra (SX-C) sterndrive, for fresh water use. Received the anode within a week of ordering the part, which is not going to be installed until Spring.

Paul B.
Volvo Penta Magnesium Transom Shield Anode | Martyr CM3854130M

Black Liquid Electrical Tape - 4 oz. | Star Brite 084104B

JEFFREY K.
Black Liquid Electrical Tape - 4 oz. | Star Brite 084104B

Fuel Additives & Cleaners

Fuel Additives & Cleaners for Peak Marine Performance

Maintaining a boat engine requires the right tools and care. Therefore, using high-quality Fuel Additives & Cleaners is essential for every boat owner. These products ensure your engine runs smoothly throughout the boating season. They also protect your fuel system from the harsh marine environment. Macomb Marine Parts offers a wide selection of top-tier treatments to keep your vessel in top shape.

Prevent Ethanol Damage with Advanced Treatments

Many modern fuels contain ethanol, which can harm marine engines. Consequently, ethanol often attracts moisture and leads to phase separation in your tank. You can avoid these costly repairs by using specialized Fuel Additives & Cleaners. Our inventory includes Star Tron Enzyme treatments that break down water and prevent gum buildup. Additionally, these stabilizers keep fuel fresh for up to a year. This makes them perfect for winter storage or long periods of inactivity.

Enhance Engine Power and Efficiency

Over time, carbon deposits can build up on your fuel injectors and spark plugs. As a result, you might notice a drop in power or poor fuel economy. Our collection of Fuel Additives & Cleaners includes powerful detergents like Yamalube Ring Free Plus and Sierra E-GO! Blast. These formulas quickly dissolve varnish and carbon from intake ports and combustion chambers. Since they clean as you drive, you will enjoy a more responsive engine and better throttle control.

Protect Your Fuel System from Corrosion

The saltwater environment is naturally corrosive to metal engine parts. Because of this, our Fuel Additives & Cleaners contain advanced metal deactivators and corrosion inhibitors. These additives create a protective film on brass, copper, and aluminum components. Furthermore, they prevent rust from forming inside your fuel lines and tanks. By investing in these protective fluids now, you extend the overall life of your fuel system and engine.

Reliable Solutions for Two-Cycle and Four-Stroke Motors

Whether you run a classic outboard or a modern inboard, we have the right solution. Our Fuel Additives & Cleaners are compatible with both 2-cycle and 4-stroke marine engines. We carry trusted brands like Quicksilver, BRP, and Sierra to ensure maximum compatibility. Moreover, these products are designed to reduce smoke and improve idle quality. Browse our full selection at Macomb Marine Parts to find the perfect match for your specific engine model.