Petrol and diesel fuel filters

Fuel filters are vital for the health of your marine engine, whether inboard or outboard. A dirty or unsuitable filter can cause power loss, excessive fuel consumption, and, in the worst-case scenario, serious damage to the fuel injection system. Here you'll find Gertech and Osculati filters, tested to withstand marine conditions and guarantee optimal filtration.

We offer filters with different filtration levels (from 10 to 30 microns) and flow rates (up to 1200 l/h) to suit engines of all sizes. Choose from water separating filters, diesel filters with transparent bowls (for immediate visual inspection), and replacement cartridges.

Why Choose a Quality Fuel Filter?

A low-quality filter not only fails to protect your engine but can even release impurities into the fuel system. Our filters are made with corrosion-resistant materials (stainless steel, aluminum) and designed to withstand the vibrations and stresses typical of boating. Always check compatibility with your engine and adhere to the replacement intervals recommended by the manufacturer.

Nautica Basile's Tip

• Visual Inspection: If your filter has a transparent bowl, check it regularly for the presence of water or sediment.


• Periodic Replacement: Even if the filter looks clean, replace it according to the engine manual's instructions. A clogged filter can restrict fuel flow and damage the pump.


• Extra Protection: Consider installing a water separating pre-filter to separate water from the fuel before it reaches the main filter.

Remember to also check our approved fuel hoses and fittings for complete fuel system maintenance.

Frequently Asked Questions

What is the difference between a diesel filter and a gasoline filter?

Diesel filters are designed to separate water from diesel fuel, a less frequent problem with gasoline. Gasoline filters focus on removing solid impurities. Many modern filters are suitable for both fuels, but it's always best to check the specifications.

How do I know which filter is right for my engine?

Check the original filter code recommended by the engine manufacturer. Alternatively, measure the diameter of the fittings and the maximum flow rate required by the engine (indicated in liters/hour). If in doubt, contact us with your engine model.

How often should I change the fuel filter?

The replacement frequency varies depending on the type of engine and the conditions of use. In general, it is recommended to replace the filter at least once a year or every 100 hours of navigation. If you often navigate in dirty waters or use poor-quality fuel, you may need to replace it more frequently.

What happens if I don't change the fuel filter?

A clogged fuel filter can cause a number of problems, including power loss, starting difficulties, excessive fuel consumption, and damage to the fuel pump or injectors. In the worst case, it can lead to engine seizure.

Can I install a fuel filter different from the original one?

Yes, you can install a compatible filter, provided it meets the flow rate, filtration level, and fitting size specifications. Make sure the filter is approved for marine use and is corrosion-resistant.

What is the difference between a diesel filter and a gasoline filter?

Diesel filters are designed to separate water from diesel fuel, a less frequent problem with gasoline. Gasoline filters focus on removing solid impurities. Many modern filters are suitable for both fuels, but it's always best to check the specifications.

How do I know which filter is right for my engine?

Check the original filter code recommended by the engine manufacturer. Alternatively, measure the diameter of the fittings and the maximum flow rate required by the engine (indicated in liters/hour). If in doubt, contact us with your engine model.

How often should I change the fuel filter?

The replacement frequency varies depending on the type of engine and the conditions of use. In general, it is recommended to replace the filter at least once a year or every 100 hours of navigation. If you often navigate in dirty waters or use poor-quality fuel, you may need to replace it more frequently.

What happens if I don't change the fuel filter?

A clogged fuel filter can cause a number of problems, including power loss, starting difficulties, excessive fuel consumption, and damage to the fuel pump or injectors. In the worst case, it can lead to engine seizure.

Can I install a fuel filter different from the original one?

Yes, you can install a compatible filter, provided it meets the flow rate, filtration level, and fitting size specifications. Make sure the filter is approved for marine use and is corrosion-resistant.