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> Engine Room > Remove category: Cooling Systems

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Items: 1 - 15 of 75 | Pages: 1  2  3  4  5  Next 
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  • Sherwood pump impellers

    Sherwood Replacement Impellers

    Sherwood impellers for marine applications such as water pumps and bilge pumps. Use Neoprene...

    In Stock 

    Price: $26.99 to $199.99
  • engine oil pressure and coolant temperature warning buzzer

    Cole Hersee Marine Engine Warning Kit

    This marine engine warning kit consists of a buzzer that sounds when your boat's engine oil...

    In Stock 

    Price: $31.13
  • Yamaha Outboard Water Pump

    Yamaha Outboard Water Pump Repair Kits

    Sierra water pump repair kits repair and replace OEM water pump components on Yamaha outboard...

    In Stock 

    Price: $42.95 to $81.34
  • seawater strainers

    Vetus 330 Cooling Water Strainers

    Vetus Type 330 sea strainers filter seawater before it is fed into the cooling system of marine engi...

    In Stock 

    Price: $28.82 to $126.23
  • Mercury Upper Repair Kits

    Mercury Marine Upper Water Pump Repair Kits

    Mercury Marine Upper Water Pump Repair Kits contain everything needed to repair upper water pumps...

    In Stock 

    Price: $41.10 to $120.48
  • Mercury Replacement Impellers

    Mercury Marine Replacement Water Pump Impellers

    Mercury Marine Replacement Water Pump Impellers fit a large variety of engine cooling systems....

    In Stock 

    Price: $16.85 to $67.33
  • Yamaha Water Pump Impellers

    Yamaha Water Pump Impellers

    These impellers are designed for Yamaha type water pumps. Various styles available. ...

    In Stock 

    Price: $18.34 to $34.17
  • Perko Flush Pro Engine Flushing System

    Perko Flush Pro Engine Flushing System

    The Perko Flush Pro valve connects to garden hoses for easy freshwater inboard motor flushing. Its...

    In Stock 

    Price: $93.92 to $163.28
  • Sierra Temperature Sender

    Sierra Temperature Sender

    The Sierra Temperature Sender comes with a 10-32 terminal type stud with several pipe thread sizes...

    In Stock 

    Price: $17.80 to $25.96
  • ITT Jabsco Impeller Pullers for removing marine water and bilge pump impellers for inspection or replacement

    Jabsco Impeller Pullers

    Use these flexible impeller removal tools to pull impellers from marine water pumps and bilge...

    In Stock 

    Price: $94.97 to $105.39
  • Mercury Impeller Kits

    Mercury Marine Water Pump Impeller Repair Kits

    Mercury Marine Water Pump Impeller Repair Kits are designed to be complete replacement kits for the...

    In Stock 

    Price: $26.72 to $39.20
  • Sherwood Pump Major Repair Kit 12665

    Sherwood Pump Major Repair Kit 12665

    Sherwood's 12665 Major Repair Kit includes: an impeller, O-ring, gasket, seal, snap rings, key and...

    In Stock 

    Price: $155.76
  • Johnson Evinrude Water Pump Kits

    Johnson / Evinrude Water Pump Kits

    These two water pump kits service Johnson/ Evinrude marine outboard engines. Both kits are...

    In Stock 

    Price: $68.02 to $75.10
  • Vetus Anti Syphon Device with Valve

    Vetus Anti Syphon Device with Valve

    Vetus airvent ASD is an anti-siphon loop with valve necessary for engine coolant plumbing. Uses a...

    In Stock 

    Price: $75.72
  • 8 Blade Flexible Impellers for marine engine water pumps and boat bilge pumps

    Jabsco 8 Blade Flexible Impellers

    8 Blade Jabsco flexible impellers with nitrile or neoprene construction for marine engine water...

    In Stock 

    Price: $36.82 to $138.62
Items: 1 - 15 of 75 | Pages: 1  2  3  4  5  Next 
 

Cooling System Maintenance

Impellers, thermostats and water pumps are essential components to regulating an efficient working temperature in your marine engine. Engines passing seawater through the system will inevitably require service. Simple routine maintenance of cooling systems will assure your vessel is ready for its next adventure. Flush raw water systems on the trailer or at the end of the season. Failure of these components will overheat an engine, possibly leading to costly damage of core components.

Water pumps with rubber impellers burn out if run dry. This could be caused by simply forgetting to open a seacock. Another common cause at sea is weeds or a plastic bag stuck in the seawater intake through-hull. Having spares on hand is highly recommended. As impellers age they lose there flexibility and should be replaced.

The thermostat is a simple valve which opens once the engine has warmed, thus allowing the coolant to circulate. On most engines the thermostat will pop at 160 degrees F and be fully open at 180 degrees F. To troubleshoot, remove a suspect thermostat and place it in a pot of boiling water with a thermometer. A malfunctioning thermostat must be replaced.

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