Fuel Coolers are designed for cooling fuel on marine engines. Fuel coolers reduce or eliminate vapor lock conditions of the fuel system. This fuel cooler is used to cool the fuel before it is routed to the engine.

Fuel ethanol plant is used to make fuel ethanol. Fuel ethanol is produced by dehydration of rectified spirit or extra neutral alcohol. Ethanol is used as part of the fuel, by blending with petrol, for a motor vehicle. This is called fuel-ethanol. Ethanol could be blended in various proportions in petrol. It is usually added 5 to 10% by volume of petrol for such application. Fuel ethanol can also be produced from wheat, corn, beet and sweet sorghum. Ethanol is one of the best tools to fight vehicular pollution, contains 35% oxygen that helps complete combustion of fuel and thus reduces harmful tailpipe emissions. It also reduces particulate emissions that pose a health hazard.

A fuel filter is a filter, which is in the fuel line that screens out dirt and rust particles from the fuel. Fuel filters need to be maintained at regular service intervals. This is usually a case of simply disconnecting the filter from the fuel line and replacing it with a new one, although some specially designed filters can be cleaned and reused many times. If a filter is not replaced regularly it may become clogged with contaminants and cause a restriction in the fuel flow, causing an appreciable drop in engine performance as the engine struggles to draw enough fuel to continue running normally.