Cooling system

  • Propeller Nut internal thread 26X2 Magnesium

    Propeller Nut internal thread 26X2 Magnesium

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  • Propeller Nut internal thread 26X2 Zinc

    Propeller Nut internal thread 26X2 Zinc

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  • Propeller Nut internal thread 20X2 Magnesium

    Propeller Nut internal thread 20X2 Magnesium

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  • Propeller Nut internal thread 20X2 Zinc

    Propeller Nut internal thread 20X2 Zinc

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  • Propeller Nut internal thread M30 Magnesium

    Propeller Nut internal thread M30 Magnesium

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  • Propeller Nut internal thread 30X1,5 Magnesium

    Propeller Nut internal thread 30X1,5 Magnesium

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  • Propeller Nut internal thread 30X1,5 Zinc

    Propeller Nut internal thread 30X1,5 Zinc

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  • Propeller Nut internal thread M30 Zinc

    Propeller Nut internal thread M30 Zinc

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  • Propeller Nut internal thread M27 Magnesium

    Propeller Nut internal thread M27 Magnesium

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  • Propeller Nut internal thread 27X1,5 Magnesium

    Propeller Nut internal thread 27X1,5 Magnesium

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  • Propeller Nut internal thread M27 Zinc

    Propeller Nut internal thread M27 Zinc

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  • Propeller Nut internal thread M24 Magnesium

    Propeller Nut internal thread M24 Magnesium

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  • Propeller Nut internal thread M24 Zinc

    Propeller Nut internal thread M24 Zinc

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  • Propeller Nut internal thread M20 Magnesium

    Propeller Nut internal thread M20 Magnesium

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  • Propeller Nut internal thread M20 Zinc

    Propeller Nut internal thread M20 Zinc

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  • Max Prop propeller nut for 3 blades propeller Zinc

    Max Prop propeller nut for 3 blades propeller Zinc

    Sale! Original price was: €93,95.Current price is: €78,95. Same day shipping
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  • Max Prop  - 3 holes propeller anode Ø150 Zinc

    Max Prop – 3 holes propeller anode Ø150 Zinc

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  • Max Prop  - 3 holes propeller anode Ø120 Zinc

    Max Prop – 3 holes propeller anode Ø120 Zinc

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  • Max Prop collar anode int. Ø63,5 Zinc

    Max Prop collar anode int. Ø63,5 Zinc

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  • Max Prop - 6 holes prop anode MP83R Magnesium

    Max Prop – 6 holes prop anode MP83R Magnesium

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  • Ferretti exagonal  hydro propeller anode Ø155 Aluminium

    Ferretti exagonal hydro propeller anode Ø155 Aluminium

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  • Ferretti exagonal  hydro propeller anode Ø155 Zinc

    Ferretti exagonal hydro propeller anode Ø155 Zinc

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  • Ferretti exagonal propeller anode Ø155 Aluminium

    Ferretti exagonal propeller anode Ø155 Aluminium

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  • Ferretti propeller anode Ø155 Aluminium

    Ferretti propeller anode Ø155 Aluminium

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The various types of cooling water systems

There are three types of cooling systems:

  1. Direct cooling: a cooling water system whereby water is pumped into the engine block by a impeller pump.
  2. Indirect cooling: a separate cooling water system (also called intercooling or heat exchanger system) in which there is coolant in the engine and cooling water is pumped through a heat exchanger by means of an impeller pump.
  3. Indirect keel cooling : a keel cooling system, in which cooling pipes with coolant run under the boat. With the latter system, a wet exhaust is not possible unless you have installed an additional impeller pump or electric pump.

Dry or wet exhaust?

Choose a wet exhaust. With a wet exhaust, the noise is muffled by the water. You can also use a rubber exhaust hose because of the lower temperature. <read more>