Cooling system

  • Impeller Cummins 3916720 Mercruiser 47-853126

    Impeller Cummins 3916720 Mercruiser 47-853126

    Sale! Original price was: €67,95.Current price is: €56,95. Same day shipping    Add to cart
  • Hose barb male thread 1/2 x 10 mm

    Hose barb male thread 1/2 x 10 mm

    Sale! Original price was: €3,95.Current price is: €3,69. Same day shipping    Add to cart
  • Placeholder

    JMP Bolt BOL0163

    Sale! Original price was: €2,59.Current price is: €2,19. Same day shipping    Add to cart
  • Caterpillar pencil anode Ø 16 L. 63 Zinc

    Caterpillar pencil anode Ø 16 L. 63 Zinc

    Sale! Original price was: €12,95.Current price is: €10,95. Same day shipping    Add to cart
  • Scandinavian type bolt-on anode 0,65kg Aluminium

    Scandinavian type bolt-on anode 0,65kg Aluminium

    Sale! Original price was: €23,95.Current price is: €19,95. Same day shipping    Add to cart
  • Bolt on anode 0,8kg with slotted holes H.C.250, Aluminium

    Bolt on anode 0,8kg with slotted holes H.C.250, Aluminium

    Sale! Original price was: €32,95.Current price is: €26,95. Same day shipping    Add to cart
  • weld on anode 0,55kg, Aluminium

    weld on anode 0,55kg, Aluminium

    Sale! Original price was: €20,95.Current price is: €17,95. Same day shipping    Add to cart
  • Bolt-on Bar Anodes Vetus Type 15 150x60x25 H.C. 80, Magnesium

    Bolt-on Bar Anodes Vetus Type 15 150x60x25 H.C. 80, Magnesium

    Sale! Original price was: €30,95.Current price is: €25,95. Same day shipping    Add to cart
  • Volvo Penta Split collar anode for Saildrive Zinc (without bolts) 22651246

    Volvo Penta Split collar anode for Saildrive Zinc (without bolts) 22651246

    Sale! Original price was: €63,95.Current price is: €52,95. Same day shipping    Add to cart
  • Mini hose clamp 10-13 mm Stainless steel A2 (W4)

    Mini hose clamp 10-13 mm Stainless steel A2 (W4)

    Sale! Original price was: €2,79.Current price is: €2,29. Same day shipping    Add to cart
  • Martec rubber 2" 50mm

    Martec rubber 2″ 50mm

    Sale! Original price was: €6,95.Current price is: €5,95. Same day shipping    Add to cart
  • CR Brass Through-hull outlet Convex standard 1/2"

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

    Sale! Original price was: €16,95.Current price is: €13,95. Same day shipping    Add to cart
  • Water pump Electrical impeller pump 12V 35 L/min

    Water pump Electrical impeller pump 12V 35 L/min

    €479,95 Out of stock    Read more
  • Water Exhaust muffler Ø 40mm

    Water Exhaust muffler Ø 40mm

    Sale! Original price was: €104,95.Current price is: €85,95. Same day shipping    Add to cart
  • Hose clamp SS 75 – 80 mm exhaust hose

    Hose clamp SS 75 – 80 mm exhaust hose

    Sale! Original price was: €7,95.Current price is: €5,95. Same day shipping    Add to cart
  • Cooling water hose Reducer 32 to 58 mm

    Cooling water hose Reducer 32 to 58 mm

    €30,95 Same day shipping    Add to cart
  • Coolant hose 90° Curved hose 12 mm x 150 mm (1/2")

    Coolant hose 90° Curved hose 12 mm x 150 mm (1/2″)

    Sale! Original price was: €24,95.Current price is: €20,95. Same day shipping    Add to cart
  • Impeller Seasall: S220/S250 Kashiyama: SP-170

    Impeller Seasall: S220/S250 Kashiyama: SP-170

    Sale! Original price was: €124,95.Current price is: €104,95. Same day shipping    Add to cart
  • Impeller Northern Lights: 25-12009

    Impeller Northern Lights: 25-12009

    Sale! Original price was: €39,95.Current price is: €32,95. Same day shipping    Add to cart
  • Volvo Penta expansion plug for cylinder head - 477024

    Freeze cap Freeze plug 49.21mm

    Sale! Original price was: €5,95.Current price is: €4,95. Next day shipping    Add to cart
  • Hose barb INNER THREAD 1/2 x 13 mm

    Hose barb INNER THREAD 1/2 x 13 mm

    Sale! Original price was: €3,39.Current price is: €2,79. Same day shipping    Add to cart
  • Hose barb male thread 3/8 x 10 mm

    Hose barb male thread 3/8 x 10 mm

    Sale! Original price was: €2,89.Current price is: €2,39. Same day shipping    Add to cart
  • Yanmar pencil anode Ø12,7 L.38 plug 3/8''NPT Zinc + Brass

    Yanmar pencil anode Ø12,7 L.38 plug 3/8”NPT Zinc + Brass

    Sale! Original price was: €34,95.Current price is: €28,95. Same day shipping    Add to cart
  • Yanmar pencil anode Ø16 L.50 with brass plug 1/2'' Bspt Zinc + Brass

    Yanmar pencil anode Ø16 L.50 with brass plug 1/2” Bspt Zinc + Brass

    Sale! Original price was: €29,95.Current price is: €24,95. 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>