The water pump impeller is a crucial component in outboard motors, responsible for circulating water through the engine's cooling system to prevent overheating.
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1-2 weeks delivery time This regulator-rectifier is essential for maintaining stable voltage and current in various Mercury outboard motors, covering specific models and produced by Sierra under product number 18-5732.
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$ 208.41
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1-2 weeks delivery time These trim relays enhance the performance and reliability of Mercury and Mariner outboard engines, designed for specific engine models and manufactured by Sierra under product number 18-5737.
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$ 113.13
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1-2 weeks delivery time This rectifier regulator is designed for various Mercury outboard models, ensuring optimal performance and reliability, produced by Sierra under product number 18-5743.
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$ 345.81
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1-2 weeks delivery time This CDI unit is designed for Johnson and Evinrude outboard engines, ensuring reliable performance for models between 1977 and 1984 with a power range of 4-60hp, manufactured by Sierra under product number 18-5758.
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$ 201.96
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1-2 weeks delivery time The Switch Box for Mercury engines is crucial for controlling engine functions effectively, ensuring reliable operation for various models from 1976 to 2010, produced by Sierra under product number 18-5775.
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$ 351.70
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1-2 weeks delivery time This CDI unit for Mercury engines plays a vital role in ignition timing, ensuring efficient performance and reliable starting for models from 1977 to 2006, manufactured by Sierra under product number 18-5777.
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$ 383.49
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1-2 weeks delivery time This CDI for Johnson and Evinrude engines ensures optimal ignition performance and reliability for 2-cylinder models from 1993 to 2005, manufactured by Sierra under product number 18-5785.
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$ 332.50
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1-2 weeks delivery time These relays are essential for maintaining optimal performance in various engine models, compatible with brands like Evinrude and Johnson, and produced by Sierra under product number 18-5808.
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$ 63.03
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1-2 weeks delivery time The Mercury Motor Relays are essential components for various Mercury and Mercruiser engines, ensuring reliable performance and operation across models such as V135, V150, and 3.0L, produced by Sierra under product number 18-5817.
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$ 33
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1-2 weeks delivery time Designed for outboard motors, the Mercury Trim Relay provides optimal functionality for models including V135, V150, and XR4, manufactured by Sierra under product number 18-5818.
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$ 61.96
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1-2 weeks delivery time These relays are compatible with a range of Mercury and Mariner engines, ensuring smooth operation for various models from 15 to 800, produced by Sierra under product number 18-5820.
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$ 52.56
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1-2 weeks delivery time The Starter Relays for Yamaha Engines provide reliable starting for models ranging from 9.9 to 100hp, manufactured by Sierra under product number 18-5821.
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$ 44.16
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1-2 weeks delivery time These relays are designed for a range of Johnson and Evinrude outboard motors, ensuring efficient operation for models from 30 to 300, produced by Sierra under product number 18-5833.
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$ 91.85
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1-2 weeks delivery time Designed for various Mercury outboard motor models, these relays ensure reliable performance and functionality, manufactured by Sierra under product number 18-5834.
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$ 73.41
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1-2 weeks delivery time The Trim Relays for Mercury engines are essential for ensuring efficient operation across various models, including V135, V150, and 3.0L, manufactured by Sierra under product number 18-5849.
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$ 28.85
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1-2 weeks delivery time These starter relays are essential for the efficient operation of Yamaha outboard engines, compatible with models ranging from 40 to 90hp, produced by Sierra under product number 18-5879.
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$ 145.01
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1-2 weeks delivery time The oil pressure sensor for Volvo-Penta engines is essential for monitoring engine pressure, ensuring optimal performance for models including 4.3L and 8.2L, produced by Sierra under product number 18-5894.
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$ 68.03
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1-2 weeks delivery time This temperature sensor is designed for accurate readings in various Mercury outboard engines, ensuring reliability for models such as the V135 and V1500, manufactured by Sierra under product number 18-5896.
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$ 57.76
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1-2 weeks delivery time The temperature sensor for Mercruiser and Volvo-Penta models is crucial for monitoring engine temperature across a range of engines, produced by Sierra under product number 18-5897.
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$ 41.72
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1-2 weeks delivery time This temperature sensor ensures accurate readings for various Mercruiser engines, enhancing performance and safety for models including 4.3L and 7.4, manufactured by Sierra under product number 18-5898.
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$ 35.67
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What is the function of an impeller in an outboard motor?
The impeller in an outboard motor is a flexible, rubber component housed within the water pump. Its primary function is to draw water from outside the boat and circulate it through the engine's cooling system, preventing overheating. Regular inspection and timely replacement of the impeller are crucial, as wear or damage can lead to engine failure. Utilizing appropriate tools, such as an impeller puller, can facilitate safe removal and installation during maintenance procedures.
For genuine replacement parts, see our range of Boat Impeller.
For models designed specifically for Evinrude engines, explore our selection of Evinrude Impeller options. We also offer a dedicated range of Mercury Impeller replacements for those maintaining Mercury outboard motors, ensuring optimal performance and compatibility.
What are the differences between a standart outboard impeller and a raw water pump impeller in outboard motors?
A standard outboard impeller is typically designed for general cooling system operation, ensuring a steady water flow through the pump housing and engine. A raw water pump impeller, on the other hand, is specifically built to handle unfiltered seawater, requiring a more flexible impeller material to resist wear and debris. Regular impeller service, including replacing the old impeller with a new one and applying lubricant to the shaft and seal, helps maintain optimal performance and prevent gear damage.
For those servicing their outboard motor, a proper Honda Impeller Replacement ensures efficient cooling and engine longevity.
What are the signs that indicate an outboard engine needs an impeller service?
Signs that an outboard engine needs an impeller service include reduced water flow from the telltale, overheating, or unusual noises from the water pump housing. If the engine temperature rises abnormally, it may indicate that the water pump impeller is worn or damaged, requiring removal and replacement with a new impeller from a repair kit. Routine inspection and proper installation following the brand’s instructions help maintain performance and prevent issues related to overheating and insufficient cooling.
For Tohatsu engines, a high-quality Tohatsu Impellers is essential for maintaining optimal water circulation and preventing engine damage. Regularly checking and replacing the Tohatsu impeller ensures efficient cooling, prolonging the life of your outboard motor and keeping it in peak condition for all your boating adventures.