Cooling system

  • CR Messing slangtule (buitendraad) 3/8" x 20mm

    CR Brass Hose tail (male) 1/2″ x 13mm

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  • Mercury collar for trim cylinder Magnesium

    Mercury collar for trim cylinder Magnesium

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  • CR Brass Through-hull outlet Convex standard 1"1/4

    CR Brass Through-hull outlet Convex standard 1″1/4

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  • Impeller Volvo: 875660, 875736, 825942, 21730344, 877066, 807904, 21951362, 857636-1 Oberdorfer: 7054

    Impeller Volvo: 875660, 875736, 825942, 21730344, 877066, 807904, 21951362, 857636-1 Oberdorfer: 7054

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  • ZF pencil anode Ø10 L.18 with brass plug 1/4''Bspt Zinc + Brass

    ZF pencil anode Ø10 L.18 with brass plug 1/4”Bspt Zinc + Brass

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  • Tear drop bolt-on anode 3kg with slotted holes H.C.220, Zinc

    Tear drop bolt-on anode 3kg with slotted holes H.C.220, Zinc

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  • Tear drop bolt-on anode 1kg with slotted holes H.C.220 Aluminium

    Tear drop bolt-on anode 1kg with slotted holes H.C.220 Aluminium

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  • Standard Shaft anode Ø 25mm, Zinc

    Standard Shaft anode Ø 25mm, Zinc

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  • Rubber sleeve Heat exchanger Bowman 3366 51/28

    Rubber sleeve Heat exchanger Bowman 3366 51/28

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  • Exhaust hose 65mm - R.I.NA and Lloyd's approved - Water cooled outlet system

    Exhaust hose 65mm – R.I.NA and Lloyd’s approved – Water cooled outlet system

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  • Hose barb male thread 1/2 x 16 mm

    Hose barb male thread 1/2 x 16 mm

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  • Yanmar pencil anode Ø15 L.20 Zinc

    Yanmar pencil anode Ø15 L.20 Zinc

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  • Volvo Penta pencil anode Ø15 L.40 with brass plug th.1/2'' Bspt ZN + Brass

    Volvo Penta pencil anode Ø15 L.40 with brass plug th.1/2” Bspt ZN + Brass

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  • Disc anode single Ø90mm Heavy, Zinc

    Disc anode single Ø90mm Heavy, Zinc

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  • CR Brass Elbow 90º female/male 1"1/4

    CR Brass Elbow 90º female/male 1″1/4

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  • Circulation pump Cooling water 18L/min 12V

    Circulation pump Cooling water 18L/min 12V

    Sale! Original price was: €154,95.Current price is: €129,95. Out of stock    Read more
  • Volvo Penta QL Bow thruster anode, Zinc

    Volvo Penta QL Bow thruster anode, Zinc

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  • Hose clamp SS ⌀ 35 – 40 mm exhaust hose

    Hose clamp SS ⌀ 35 – 40 mm exhaust hose

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  • Pencil anode zinc only Ø5/8'' L=2'' thread=1/4''UNC

    Pencil anode zinc only Ø5/8” L=2” thread=1/4”UNC

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  • Volvo Penta outdrive ring for engine 290 duo prop Magnesium

    Volvo Penta outdrive ring for engine 290 duo prop Magnesium

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  • Sanitary hose water hose 38mm butyl white, odor-proof, 10 year warranty

    Sanitary hose water hose 38mm butyl white, odor-proof, 10 year warranty

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  • #112

    Flexofold – screw propeller anode, Aluminium

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  • Stainless steel Through-hull outlet, ø 51mm, 45 degrees

    Stainless steel Through-hull outlet, ø 51mm, 45 degrees

    Sale! Original price was: €35,95.Current price is: €29,95. Same day shipping    Add to cart
  • CR Brass Through-hull outlet, flushed 1/2"

    CR Brass Through-hull outlet, flushed 1/2″

    Sale! Original price was: €16,95.Current price is: €13,95. Same day shipping    Add to cart

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>