Cooling system

  • Yamaha small Bar anode 4-15 hp Magnesium

    Yamaha small Bar anode 4-15 hp Magnesium

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  • Volvo Penta 130S, 150S shared collar anode for Saildrive Zinc 3888305 (including bolts)

    Volvo Penta 130S, 150S shared collar anode for Saildrive Zinc 3888305 (including bolts)

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  • Collar anode for Isotherm boiler Zinc

    Collar anode for Isotherm boiler Zinc

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  • CR Brass Valve 1"1/2

    CR Brass Valve 1″1/2

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  • Bolt on anode 0,55kg with slotted holes H.C.200 Aluminium

    Bolt on anode 0,55kg with slotted holes H.C.200 Aluminium

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  • Volvo Penta Anode kit DPH/DPR drives Aluminium

    Volvo Penta Anode kit DPH/DPR drives Aluminium

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  • Mini hose clamp 12-15 mm Stainless steel A2 (W4)

    Mini hose clamp 12-15 mm Stainless steel A2 (W4)

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  • Mercury Anode kit Bravo II-III, Aluminium

    Mercury Anode kit Bravo II-III, Aluminium

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  • CR Brass Valve 1"

    CR Brass Valve 1″

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  • Hose clamp 15-24 mm

    Hose clamp 15-24 mm

    Sale! Original price was: €3,89.Current price is: €3,29. Same day shipping    Add to cart
  • Impeller pump F5b Mercedes OM636, OM615, OM621, ST170

    Impeller pump F5b Mercedes OM636, OM615, OM621, ST170

    Sale! Original price was: €379,95.Current price is: €319,95. Same day shipping    Add to cart
  • Autoprop propeller anode H6 Zink

    Autoprop propeller anode H6 Zink

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  • CR Brass Hose tail (male) 1/2" x 19mm

    CR Brass Hose tail (male) 1/2″ x 19mm

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  • Standard Shaft anode Ø 25mm, Zinc

    Standard Shaft anode Ø 25mm, Zinc

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  • Pencil anode zinc only Ø3/8'' L=1-3/4'' thread=1/4''UNC

    Pencil anode zinc only Ø3/8” L=1-3/4” thread=1/4”UNC

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  • Impellerpomp Deksel Pakking 2899 Vervangt u de Impeller? Dit is de pakking voor de deksel van uw Jabsco, Johnson, Jmp, Ancor, koelwaterpomp

    Impeller pump Cover Gasket 2899 45mm 3 holes

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  • Mercury Anode kit Bravo III -2004 to present, Magnesium

    Mercury Anode kit Bravo III -2004 to present, Magnesium

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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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  • Disc anode single Ø90mm, Zinc

    Disc anode single Ø90mm, Zinc

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  • Hose barb male thread 1 1/4 x 38 mm

    Hose barb male thread 1 1/4 x 38 mm

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  • Impellerpomp Volvo Penta D3 serie koelwaterpomp Door gebruikt van Hoogwaardiger materiaal is deze pomp van beter kwaliteit dan het origineel

    Impeller pump Volvo Penta D3 series Cooling water pump 21141637, 3884694, 21381693, 3593660, 3584343

    Sale! Original price was: €449,95.Current price is: €369,95. Same day shipping    Add to cart
  • 7110-01

    Impeller Westerbeke: 33100, 33112, 11764

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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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  • Hose barb male thread 3/4 x 25 mm

    Hose barb male thread 3/4 x 25 mm

    Sale! Original price was: €4,95.Current price is: €3,95. 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>