Water strainers debris and impurities from incoming sea or raw water, preventing clogs and damage to vital components like engines and pumps. Installed in the water intake system, these strainers ensure smooth operation and protect the vessel's equipment from potential harm in saltwater environments.
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1-2 weeks delivery time For the Yanmar 2QM 15 Diesel Engine, this Martec Heat Exchanger provides an efficient closed cooling solution. The set includes an expansion tank, electric circulation pump, and mounting material, with installation designed to be mounted against a wall.
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$ 1,752
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1-2 weeks delivery time This Martec Heat Exchanger for Yanmar 2QM 20 Diesel Engines is specifically designed for easy conversion to a closed cooling system. The package includes an expansion tank, electric circulation pump, and all necessary mounting materials for wall installation.
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$ 1,816.17
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1-2 weeks delivery time The Martec Heat Exchanger for Yanmar 3GM/3GM30 Diesel Engines helps convert direct cooling systems to a closed system. It includes an expansion tank, electric circulation pump, and mounting materials, all intended for easy wall mounting.
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$ 1,922.98
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1-2 weeks delivery time The Martec Heat Exchanger for Yanmar 3HM Diesel Engines is designed to convert direct cooling to a closed system. It includes an expansion tank, an electric Johnson circulation pump, and mounting material, with installation against a wall.
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$ 1,922.98
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1-2 weeks delivery time This Martec Heat Exchanger for the Yanmar 3QM 30 Diesel Engine efficiently converts direct cooling systems into closed cooling systems. It includes an expansion tank, electric circulation pump, and mounting material, designed for wall mounting.
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$ 2,934.07
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1-2 weeks delivery time The Martec Heat Exchanger for Yanmar YSB 8-12 Diesel Engines converts direct cooling systems to closed systems. It includes an expansion tank, electric circulation pump, and all necessary mounting materials for easy installation against a wall.
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$ 1,709.18
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1-2 weeks delivery time This Martec Heat Exchanger for the Yanmar YSM 12 Diesel Engine provides a seamless conversion from direct to closed cooling systems. The complete set includes an expansion tank, electric circulation pump, and mounting materials, designed for wall installation.
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$ 1,709.18
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1-2 weeks delivery time The Martec Heat Exchanger for the Yanmar YSM 8 Diesel Engine offers a simple solution for converting direct cooling systems to a closed system. It includes an expansion tank, electric circulation pump, and mounting materials, and is mounted directly against a wall.
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$ 1,709.18
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1-2 weeks delivery time Ideal for engines up to 17hp, this heat exchanger is designed to convert direct cooling to a closed cooling system. It includes an expansion tank, electric Johnson circulation pump, and all necessary mounting materials, and is wall-mounted for efficient installation.
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$ 1,495.45
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1-2 weeks delivery time This heat exchanger is designed for diesel engines up to 25hp, providing a complete solution for converting direct cooling to a closed system. The package includes everything required for installation, including an expansion tank, electric pump, and mounting materials.
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$ 1,602.33
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1-2 weeks delivery time For diesel engines up to 40hp, this heat exchanger converts direct cooling to a closed system, including all necessary components for easy installation, such as an expansion tank and Johnson circulation pump. It is designed for wall mounting.
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$ 1,709.18
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1-2 weeks delivery time The Martec Replacement Mounting Screw for Zinc Anode (950-7303) is specifically designed for Martec heat exchangers, providing secure attachment for zinc anodes. This replacement screw ensures that the zinc anodes stay properly mounted, contributing to the efficient performance and protection of the heat exchanger system.
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$ 9.80
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1-2 weeks delivery time This zinc anode is a reliable replacement for Martec heat exchangers, offering long-lasting protection against corrosion in marine environments.
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$ 9.34
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1-2 weeks delivery time The Allpa Nickel Plated Bronze Cooling Water Strainer (Robust) with Stainless Steel 316 Strainer, 1-1/2", H=178mm, offers heavy-duty filtration with a high flow rate of 19100 l/u at 0.1 bar and 61250 l/u at 1 bar. It is certified by RINA and designed for inboard marine use.
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$ 447.89
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1-2 weeks delivery time The Allpa Nickel Plated Bronze Cooling Water Strainer (Robust) with Stainless Steel 316 Strainer, 1-1/2", H=193mm, is a corrosion-resistant water strainer with a flow rate of 12800 l/u at 0.1 bar and 40600 l/u at 1 bar. It holds RINA certification and suits marine applications.
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$ 582.91
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1-2 weeks delivery time The Allpa Nickel Plated Bronze Cooling Water Strainer (Robust) with Stainless Steel 316 Strainer, 1-1/4", H=176mm, provides durable inboard filtration with flow rates of 8800 l/u at 0.1 bar and 27700 l/u at 1 bar, featuring a RINA DIP certificate.
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$ 504.05
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1-2 weeks delivery time The Allpa Nickel Plated Bronze Cooling Water Strainer (Robust) with Stainless Steel 316 Strainer, 1-1/4", H=178mm, delivers advanced marine filtration with a flow of 12500 l/u at 0.1 bar and 40100 l/u at 1 bar, includes RINA certification, and measures Ø98x131mm.
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$ 448.66
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1-2 weeks delivery time The Allpa Nickel Plated Bronze Cooling Water Strainer (Robust) with Stainless Steel 316 Strainer, 1", H=144mm, is a compact and reliable strainer for smaller inboard systems, with flow rates of 7950 l/u at 0.1 bar and 25500 l/u at 1 bar, certified by RINA.
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$ 354.03
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1-2 weeks delivery time The Allpa Nickel Plated Bronze Cooling Water Strainer (Robust) with Stainless Steel 316 Strainer, 1", H=151mm, features a compact and corrosion-resistant design with flow rates of 5700 l/u at 0.1 bar and 17900 l/u at 1 bar, certified by RINA for marine use.
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$ 407.28
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1-2 weeks delivery time Allpa offers a space-saving nickel-plated bronze cooling water strainer with a stainless steel 316 mesh, designed for smaller marine engines. It features a 1/2" connection, a height of 117mm, and flows up to 2400 liters per hour at 0.1 bar, certified by RINA DIP.
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$ 267.37
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What are the main components of a marine engine cooling system?
A marine engine cooling system consists of several key components designed to regulate engine temperature and prevent overheating. The heat exchanger plays a crucial role by transferring heat from the engine block to the cooling water, while the exhaust manifold and riser help dissipate excess heat as water exits through the exhaust system. Boat engines use either raw water cooling, where water from below the vessel enters and circulates through the system, or a closed-loop system with coolant circulating through a series of heat exchangers to maintain efficient temperature control.
How does the boat cooling system protect the engine block from overheating?
A boat engine cooling system prevents overheating by circulating water or coolant through the engine block to absorb excess heat. In a closed-loop system, coolant runs through a heat exchanger, transferring heat before being cooled and recirculated, while an open-loop system pulls water from the hull, cycles it through the engine, and expels it overboard. Regular checks for corrosion, leaks, and blockages help ensure proper flow and prevent failures that could lead to engine damage.
A well-maintained cooling system also protects critical engine components such as the oil cooler and fuel system by regulating temperature and preventing overheating-related failures. In diesel and Mercruiser engines, the system allows water to enter and flow efficiently, ensuring optimal heat dissipation and engine longevity. Regular replacement of worn-out parts, such as clamps and coolers, helps prevent corrosion buildup, which can restrict flow and increase the risk of system failure, ultimately affecting the vessel’s ability to keep cool and operate efficiently.
Why is it important to regularly clean the cooling system's tank and components?
Regular cleaning of the cooling system's tank and components is essential to prevent scale buildup, salt deposits, and corrosion, which can restrict water flow and reduce cooling efficiency. Marine engine manufacturers recommend inspecting the raw water pump, sea strainer, and coolant mixture on a regular basis to ensure proper circulation and prevent overheating. Unlike car engines, boat engines rely on water from the ocean or a closed-loop system, making maintenance critical to avoid costly repairs and engine failure.