Closed Cooling System

  • 950-7601A

    Martec Heat Exchanger + 17A Suitable for Volvo Penta MD6, MD7

    Sale! Original price was: €839,95.Current price is: €699,95. 3-5 working days    Add to cart
  • 950-7614

    Martec Heat Exchanger + 17S Suitable for Volvo Penta 2001, MD5 Fenix

    Sale! Original price was: €839,95.Current price is: €699,95. 3-5 working days    Add to cart
  • Marine expansion tank 5 litre for boat and yacht steel red 1" BSP connection

    Marine expansion tank 5 litre for boat and yacht steel red 1″ BSP connection

    Next day shipping    Read more
  • Marine expansion tank 40 litre for boat and yacht steel red 1" BSP connection

    Marine expansion tank 40 litre for boat and yacht steel red 1″ BSP connection

    Sale! Original price was: €529,95.Current price is: €439,95. 3-5 working days    Add to cart
  • Marine expansion tank 24 litre for boat and yacht steel red 1" BSP connection

    Marine expansion tank 24 litre for boat and yacht steel red 1″ BSP connection

    Sale! Original price was: €349,95.Current price is: €289,95. Next day shipping    Add to cart
  • Volvo Penta Thermostat housing ring AD, TAMD, KAD, 838807

    Volvo Penta Thermostat housing ring AD, TAMD, KAD, 838807

    Sale! Original price was: €27,95.Current price is: €22,95. Out of stock    Read more
  • Volvo Penta Thermostat AD, TAMD, KAD - 3831424

    Volvo Penta Thermostat AD, TAMD, KAD – 3831424

    Sale! Original price was: €61,95.Current price is: €51,95. Next day shipping    Add to cart
  • Volvo Penta expansion plug for cylinder head - 477024

    Freezer cup 28.57mm freezer cap

    Sale! Original price was: €5,95.Current price is: €4,95. Next day shipping    Add to cart
  • Volvo Penta expansion plug for cylinder head - 477024

    Freezer cup 28.00mm freezer cap

    Sale! Original price was: €5,95.Current price is: €4,95. Next day shipping    Add to cart
  • Volvo Penta expansion plug for cylinder head - 477024

    Freezer cup 27.00mm freeze cap

    Sale! Original price was: €5,95.Current price is: €4,95. Next day shipping    Add to cart
  • Volvo Penta expansion plug for cylinder head - 477024

    Freezer cup 26.00mm freezer cap

    Sale! Original price was: €6,95.Current price is: €5,95. Next day shipping    Add to cart
  • Volvo Penta expansion plug for cylinder head - 477024

    Freezer cup 25.40mm freezer cap

    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

    Freezer cup 31.75mm freezer cap

    Sale! Original price was: €5,95.Current price is: €4,95. Next day shipping    Add to cart
  • Volvo Penta expansion plug for cylinder head - 477024

    Freezer cup 34.00mm freezer cap

    Sale! Original price was: €5,95.Current price is: €4,95. Next day shipping    Add to cart
  • Volvo Penta expansion plug for cylinder head - 477024

    Freezer cup 22.00mm freeze cap

    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

    Freezer cup 18.00mm freezer cap

    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

    Freezer cup 17.46mm freezer cap

    Sale! Original price was: €3,95.Current price is: €3,49. Next day shipping    Add to cart
  • Volvo Penta expansion plug for cylinder head - 477024

    Freezer cup 14.28mm freezer cap

    Sale! Original price was: €5,95.Current price is: €4,95. Next day shipping    Add to cart
  • Volvo Penta expansion plug for cylinder head - 477024

    Freeze cap Freeze plug 12.50mm

    Sale! Original price was: €4,95.Current price is: €3,95. Next day shipping    Add to cart
  • Freeze cap Freeze plug 15.88mm

    Freeze cap Freeze plug 15.88mm

    Sale! Original price was: €5,95.Current price is: €4,95. Next day shipping    Add to cart
  • Freeze cap Freeze plug 21.43mm

    Freeze cap Freeze plug 21.43mm

    Sale! Original price was: €3,95.Current price is: €3,69. Next day shipping    Add to cart
  • Freeze cap Freeze plug 38.10mm

    Freeze cap Freeze plug 38.10mm

    Sale! Original price was: €4,95.Current price is: €3,95. Next day shipping    Add to cart
  • Freeze cap Freeze plug 44.45mm

    Freeze cap Freeze plug 44.45mm

    Sale! Original price was: €4,95.Current price is: €3,99. Next day shipping    Add to cart
  • Thermostat Yanmar Closed cooling system 121750-49800 (71gr)

    Thermostat Yanmar Closed cooling system 121750-49800 (71gr)

    Sale! Original price was: €124,95.Current price is: €104,95. Same 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.