Collection: Engine Parts & Service - Fuel Treatments

Protect your fuel. Maintain your engine. Stay ready for the water.

Explore marine fuel treatments and additives designed to support fuel-system maintenance, storage and engine performance. From seasonal storage to everyday boating, the right fuel treatment can help maintain fuel quality and keep compatible marine fuel systems ready for your next trip.

Shop marine fuel stabilizers, boat fuel additives, gasoline treatments, diesel fuel treatments, fuel-system cleaners, injector cleaners, moisture-control treatments and storage additives for compatible outboard, inboard, sterndrive, gasoline and diesel marine engines.

Whether you're preparing your boat for storage, treating fresh fuel, maintaining injectors and fuel-system components or getting your vessel ready for another season, Roam & Harbor makes it easier to find marine fuel treatments for your maintenance routine.

Always verify fuel type, engine compatibility, treatment ratio, intended application and manufacturer instructions before using any fuel additive or treatment. Never exceed the recommended dosage or combine products unless the manufacturers indicate they are compatible.

Treat the fuel. Maintain the engine. Adventure Starts Here.™