Closed Cooling System

  • Radiator cap solder neck pressure relief cap small (57mm cap)

    Radiator cap solder neck pressure relief cap small (57mm cap)

    Sale! Original price was: €16,95.Current price is: €13,95. 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: €25,95.Current price is: €20,95. Same day shipping    Add to cart
  • Volvo Penta expansion plug for cylinder head - 477024

    Freeze cap Freeze plug 35,00mm

    Sale! Original price was: €4,95.Current price is: €3,95. Next day shipping    Add to cart
  • Volvo Penta expansion plug for cylinder head - 477024

    Freeze cap Freeze plug 38,25mm

    Sale! Original price was: €4,95.Current price is: €3,95. Next day shipping    Add to cart
  • Radiatordop Volvo Penta 0.75 hPa

    Volvo Penta radiator cap 0.75 hPa 1674083, 1357775, 463828, 1674084, 3850064

    Sale! Original price was: €24,95.Current price is: €20,95. Same day shipping    Add to cart
  • Martec closed circuit cooling system Volvo MD3, MD17, Heat exchanger converting kit

    Martec closed circuit cooling system Volvo MD3, MD17, Heat exchanger converting kit

    Sale! Original price was: €1.219,95.Current price is: €1.009,95. 3-5 working days    Add to cart
  • Volvo Penta expansion plug for cylinder head - 477024

    Freezer cup 32.00mm freezer cap

    Sale! Original price was: €4,95.Current price is: €3,99. Next day shipping    Add to cart
  • Thermostat for DTN Peugeot Indenor XD4.88, XDP4.88 4.90 DTN52 DTN33

    Thermostat for DTN Peugeot Indenor XD4.88, XDP4.88 4.90 DTN52 DTN33

    Sale! Original price was: €71,95.Current price is: €59,95. Same day shipping    Add to cart
  • Radiateur dop Vetus opend bij 0,9 bar druk

    Radiator cap universal 44.00 mm

    Sale! Original price was: €12,95.Current price is: €10,95. Same day shipping    Add to cart
  • Martec closed circuit cooling system Volvo MD2, MD11, Heat exchanger converting kit

    Martec closed circuit cooling system Volvo MD2, MD11, Heat exchanger converting kit

    Sale! Original price was: €1.159,95.Current price is: €959,95. 3-5 working days    Add to cart
  • 950-42

    Martec Hose Clamp Stainless Steel 15-24 mm

    Sale! Original price was: €3,69.Current price is: €3,09. 3-5 working days    Add to cart
  • Volvo Penta expansion plug for cylinder head - 477024

    Freezer cup 26.00mm freezer cap

    Sale! Original price was: €5,95.Current price is: €4,95. Same day shipping    Add to cart
  • Thermostaat Volvo Penta MD2 MD3 MD6 MD7 MD11 MD17

    Thermostat Volvo Penta MD5 Closed cooling system

    Sale! Original price was: €76,95.Current price is: €63,95. Same day shipping    Add to cart
  • Warmtewisselaar 300-Ø100mm 61PK

    Heat exchanger 300 x Ø100mm 105hp 1-1/4” x 1” BSP connection

    €1.049,95 Same day shipping    Add to cart
  • Martec closed circuit cooling system Volvo MD6, MD7, Heat exchanger converting kit

    Martec closed circuit cooling system Volvo MD6, MD7, Heat exchanger converting kit

    Sale! Original price was: €1.089,95.Current price is: €895,95. 3-5 working days    Add to cart
  • 950-42

    Martec Hose Clamp Stainless Steel 8-14 mm

    Sale! Original price was: €2,99.Current price is: €2,49. 3-5 working days    Add to cart
  • 950-42

    Martec Hose Clamp Stainless Steel 19-28 mm

    Sale! Original price was: €3,95.Current price is: €3,79. 3-5 working days    Add to cart
  • Radiator cap solder neck pressure relief cap large (68mm cap)

    Radiator cap solder neck pressure relief cap large (68mm cap)

    Sale! Original price was: €12,95.Current price is: €10,95. Same day shipping    Add to cart
  • Volvo Penta expansion plug for cylinder head - 477024

    Freezer cup 16.00mm freeze cap

    Sale! Original price was: €3,99.Current price is: €3,29. Next day shipping    Add to cart
  • Martec closed circuit cooling system Yanmar 3GM Heat exchanger converting kit

    Martec closed circuit cooling system Yanmar 3GM Heat exchanger converting kit

    Sale! Original price was: €1.219,95.Current price is: €1.009,95. 3-5 working days    Add to cart
  • 950-42

    Martec Hose Clamp Stainless Steel 26-38 mm

    Sale! Original price was: €4,95.Current price is: €3,99. 3-5 working days    Add to cart
  • Thermostat Volvo Penta MD22 series Perkins M50 M60

    Thermostat Volvo Penta MD22 series Perkins M50 M60

    Sale! Original price was: €27,95.Current price is: €22,95. Same day shipping    Add to cart
  • KSAV02

    Gasket set heat exchanger for 3.100HE up to 5.250HE

    Sale! Original price was: €31,95.Current price is: €25,95. 3-5 working days    Add to cart
  • Volvo Penta expansion plug for cylinder head - 477024

    Freezer cup 27.00mm freeze cap

    Sale! Original price was: €4,95.Current price is: €3,95. Next day shipping    Add to cart

Closed-circuit cooling system (engine-specific)

The heat exchangers are available for a wide range of engines. You will receive a set specifically for the engine including fittings, such as hoses and pipes, for direct fastening to the engine.

Standard conversion kit for closed cooling system

You will also find standard conversion kits for going from direct cooling to a closed cooling system.

Heat exchanger for wall mounting

We also supply standard conversion kits for various engine capacities. These heat exchangers are mounted against a wall.

MARTEC heat exchanger

All MARTEC Fresh Water Cooling systems come complete with heat exchanger, expansion tank, electric Johnson circulation pump and fitting materials.