Cooling system

  • Sidepower - Sleipner propeller nut SP30/40 Ø26 H.20, Zinc

    Sidepower – Sleipner propeller nut SP30/40 Ø26 H.20, Zinc

    Sale! Original price was: €4,95.Current price is: €3,79. Same day shipping    Add to cart
  • Disc Anode single Ø50mm Heavy, Aluminium

    Disc Anode single Ø50mm Heavy, Aluminium

    Sale! Original price was: €4,95.Current price is: €3,95. Same day shipping    Add to cart
  • Impellerpomp Deksel Pakking 2369 Vervangt u de Impeller? Dit is de pakking voor de deksel van uw Jabsco, Johnson, Jmp, Ancor, koelwaterpomp

    Impeller pump Cover Gasket 2368 64mm 6 holes

    Sale! Original price was: €0,99.Current price is: €0,89. Same day shipping    Add to cart
  • CR Brass Through-hull outlet convex standard 1"1/2

    CR Brass Through-hull outlet convex standard 1″1/2

    Sale! Original price was: €55,95.Current price is: €45,95. Same day shipping    Add to cart
  • Zink Anode 1/4 "- 40.00 mm Martec

    Zinc anode 1/4 (bsp) Martec 950-7301

    Sale! Original price was: €22,95.Current price is: €18,95. Same day shipping    Add to cart
  • Stainless steel Through-hull outlet ø 38mm, straight

    Stainless steel Through-hull outlet ø 38mm, straight

    Sale! Original price was: €22,95.Current price is: €19,95. Same day shipping    Add to cart
  • Hose clamp 44-56 mm

    Hose clamp 44-56 mm

    Sale! Original price was: €4,95.Current price is: €3,95. Same day shipping    Add to cart
  • Coolant hose 90° Curved hose 18 mm x 150 mm (11/16")

    Coolant hose 90° Curved hose 18 mm x 150 mm (11/16″)

    Sale! Original price was: €15,95.Current price is: €12,95. Same day shipping    Add to cart
  • Impeller pump Craftsman Marine CM3.27. This cooling water pump has been further developed and improved, the replacement pump for your Craftsman engine.

    Impeller pump Craftsman Marine CM4.42 Cooling water pump

    Sale! Original price was: €219,95.Current price is: €179,95. Same day shipping    Add to cart
  • Large radiator cap 0.5bar pressure relief cap large (71mm cap)

    Large radiator cap 0.5bar pressure relief cap large (71mm cap)

    Sale! Original price was: €24,95.Current price is: €20,95. Next day shipping    Add to cart
  • Ball valve 2x female thread 1"

    Ball valve 2x female thread 1″

    Sale! Original price was: €16,95.Current price is: €13,95. Same day shipping    Add to cart
  • Skin fitting brass 1/2

    Skin fitting brass 1/2

    Sale! Original price was: €8,95.Current price is: €7,95. Same day shipping    Add to cart
  • Skin fitting brass 3/4

    Skin fitting brass 3/4

    Sale! Original price was: €11,95.Current price is: €9,95. Same day shipping    Add to cart
  • Hose barb male thread 1 x 25 mm

    Hose barb male thread 1 x 25 mm

    Sale! Original price was: €6,95.Current price is: €5,95. Same day shipping    Add to cart
  • Scandinavian type bolt-on anode 1kg, Aluminium

    Scandinavian type bolt-on anode 1kg, Aluminium

    Sale! Original price was: €19,95.Current price is: €16,95. Same day shipping    Add to cart
  • Scandinavian type bolt-on anode 0,3kg Aluminium

    Scandinavian type bolt-on anode 0,3kg Aluminium

    Sale! Original price was: €7,95.Current price is: €6,95. Same day shipping    Add to cart
  • Stainless steel Through-hull outlet, ø 60mm, 45 degrees

    Stainless steel Through-hull outlet, ø 60mm, 45 degrees

    Sale! Original price was: €49,95.Current price is: €42,95. Same day shipping    Add to cart
  • CR Brass Reducing nipple male/male 1/2"

    CR Brass Reducing nipple male/male 1/2″

    Sale! Original price was: €5,95.Current price is: €4,95. Same day shipping    Add to cart
  • CR Messing slangtule (buitendraad) 3/8" x 20mm

    CR Brass Hose tail (male) 3/8″ x 20mm

    Sale! Original price was: €6,95.Current price is: €5,95. Same day shipping    Add to cart
  • CR Messing slangtule (buitendraad) 3/8" x 20mm

    CR Brass Hose tail (male) 1/4″ x 12mm

    Sale! Original price was: €3,59.Current price is: €2,99. Same day shipping    Add to cart
  • Yanmar collar for Saildrive, Stainless Steel

    Yanmar collar for Saildrive, Stainless Steel

    Sale! Original price was: €27,95.Current price is: €22,95. Same day shipping    Add to cart
  • CR Brass Elbow 45º female/male 3/4"

    CR Brass Elbow 45º female/male 3/4″

    Sale! Original price was: €13,95.Current price is: €10,95. Same day shipping    Add to cart
  • CR Brass Water scoop 3/4"

    CR Brass Water scoop 3/4″

    Sale! Original price was: €44,95.Current price is: €36,95. Same day shipping    Add to cart
  • Volvo Penta Connector pipe exhaust bend 859836

    Volvo Penta Connector pipe exhaust bend 859836

    Sale! Original price was: €84,95.Current price is: €69,95. 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>