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 The Thermostat Kit for Mercruiser 4.3L, 5.0L, 6.2L MPI engines ensures optimal temperature regulation, enhancing performance and longevity. It has an original reference of 864493 and is compatible with models like 4.3L and 5.7L. Manufactured by Mercruiser and branded by Sierra, the product number is 18-43015.
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$ 52.25
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1-2 weeks delivery time This thermostat is specifically designed for Mercruiser inboard engines, ensuring precise temperature control for optimal performance. It has original references including S985009 and is suitable for MCM 496 Mag and MIE 8.1L models. The temperature range is 71°C, and it is branded by Sierra with the product number 18-43017.
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$ 40.07
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1-2 weeks delivery time The Thermostat Kit for Mercury engines is essential for maintaining the correct operating temperature in outboard engines. It has original references such as 14586A3 and operates within a temperature range of 48.9°C. Branded by Sierra, the product number is 18-43052.
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$ 61.10
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1-2 weeks delivery time Suitable for a range of Mercury engines, the thermostat kit maintains optimal temperature for engine efficiency, compatible with 4T models and original part numbers 855676002, 8M0119207, and 3R3-01030-0, and is branded by Sierra with product number 18-43175.
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$ 37.17
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1-2 weeks delivery time This gasket kit is designed for GM engine blocks, specifically for 4.3L models, ensuring optimal performance and longevity, with original references 27-11977A88 and 27-11977A92, and is branded by Sierra with product number 18-4388.
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$ 711.86
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1-2 weeks delivery time This alignment tool is essential for maintaining the integrity of your Mercruiser lower unit, ensuring proper alignment for optimal performance and longevity, with original references Merc. 91-57797A3 and Merc. 91-805475A1, branded by Sierra with product number 18-4442.
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$ 255.43
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1-2 weeks delivery time Designed for Mercruiser engines, this air exhaust valve provides efficient exhaust flow and durability, featuring an original reference of 34765A1 and a diameter of 3 inches, branded by Sierra with product number 18-4456.
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$ 62.33
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1-2 weeks delivery time This overhead exhaust outlet valve is crucial for efficient exhaust management in your boating system, molded from a single block and supplied with a stainless steel collar, featuring an inner diameter of 102 mm, and is branded by Sierra with product number 18-4457.
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$ 44.75
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1-2 weeks delivery time Designed for reliable exhaust flow, this overhead exhaust valve is made from molded rubber and attaches to the transom outlet, featuring an inner diameter ranging from 127 to 152 mm, and is branded by Sierra with product number 18-4458.
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$ 119.89
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1-2 weeks delivery time Essential for servicing Mariner and Mercury engines, this propeller removal wrench has original references Mercury Mariner 91-821887 A1 and Merc. 91-82887A1, and is branded by Sierra with product number 18-4459.
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$ 55.27
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1-2 weeks delivery time Designed for Johnson and Evinrude outboard engines, this impeller ensures optimal water flow for cooling and performance, with an original reference of 382221, made of rubber, and is branded by Sierra with product number 18-45221.
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$ 93.70
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1-2 weeks delivery time This impeller is suitable for various outboard engine models, offering reliable performance and durability, with original references 114812 and 47-95289, made of rubber, and is branded by Sierra with product number 18-45312.
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$ 56.63
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1-2 weeks delivery time This high-quality impeller is designed specifically for Tohatsu outboard engines, ensuring optimal performance and reliability, with original reference 353650210M, made of rubber, and branded by Sierra with product number 18-45404.
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$ 77.02
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1-2 weeks delivery time Tailored for Yamaha engines, this durable impeller provides excellent water flow and cooling efficiency, with original reference 6CE-44352-00-00, made of rubber, and branded by Sierra with product number 18-45617-1.
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$ 92.81
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1-2 weeks delivery time Engineered for Yanmar inboard engines, this impeller guarantees smooth operation and longevity, featuring original references 119574-42550, 119574-42552, and 09-821B, made of rubber with 12 blades, and is branded by Sierra with product number 18-45714.
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$ 144.12
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1-2 weeks delivery time This comprehensive water pump kit is ideal for Mercury and Tohatsu outboard engines, ensuring efficient cooling, with original references 46-803750A03 and 3B2-87322-0, and is branded by Sierra with product number 18-48317.
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$ 350.40
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1-2 weeks delivery time Specifically designed for Yamaha outboard engines, this high-performance water pump kit ensures efficient cooling and reliable operation, with original references 67D-W0078-00-00, and is branded by Sierra with product number 18-48619.
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$ 120.40
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1-2 weeks delivery time This durable launcher handle and rope are essential for efficiently starting your outboard engine, branded by Sierra with product number 18-4904.
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$ 19.32
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1-2 weeks delivery time This ignition kit is designed for Johnson and Evinrude outboard engines, ensuring reliable performance and optimal functionality, with original reference 0172523 for models ranging from 18 to 40 HP produced between 1962 and 1976, and is branded by Sierra with product number 18-5002.
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$ 54.81
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1-2 weeks delivery time Specifically designed for Johnson and Evinrude outboard engines, this ignition kit ensures optimal performance and reliability, with original reference 0172806 for models 9.9 to 40 HP produced between 1975 and 1983, and is branded by Sierra with product number 18-5003.
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$ 69.53
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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.