A water pump impeller replacement is a crucial maintenance task for boat and marine engines. This impeller is responsible for circulating coolant, preventing overheating, and ensuring optimal engine performance. Regular replacement of the impeller helps maintain the reliability and longevity of marine power systems, such as Perkins and Ancor engines.
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1-2 weeks delivery time The Technautic 7414 impeller is supplied with grease but no paper gasket. Grease should be applied to the pump housing interior, cover, and impeller before installation to prevent dry running damage and improve suction.
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$ 26.23
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1-2 weeks delivery time The Technautic 7415 impeller is delivered pre-greased and without a paper gasket. Applying grease during installation protects the impeller from dry running damage and enhances pump suction efficiency.
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$ 38.25
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1-2 weeks delivery time The Technautic 7416 impeller comes pre-greased without a paper gasket. Greasing the pump housing, cover, and impeller during installation prevents dry running damage and improves pump suction performance.
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$ 36.10
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1-2 weeks delivery time The Technautic 7422 impeller comes pre-greased to protect against dry running damage, with grease recommended for the pump housing, cover, and impeller before installation to enhance suction. It does not include a paper gasket and features a 45.7 x 12.8 mm dimension with a 16 mm spline shaft and 12 blades.
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$ 47.03
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1-2 weeks delivery time The Technautic 7425 impeller is supplied with grease to prevent dry running damage, and applying grease inside the pump housing, cover, and on the impeller before fitting improves performance. It has dimensions of 95 x 88 mm, a 25 mm spline shaft, and 12 blades, but no paper gasket is included.
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$ 84.28
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1-2 weeks delivery time The Technautic 7426 impeller is pre-greased to prevent dry running damage and should be further greased during installation to boost suction. It measures 65 x 50.2 mm, has a 16 mm spline shaft, 10 blades, and comes without a paper gasket.
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$ 42.66
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1-2 weeks delivery time The Technautic 7427 impeller includes grease to avoid damage from dry running, with instructions to grease the pump housing, cover, and impeller for better suction. It features a 51 x 22 mm size, 13 mm wedge shaft, 6 blades, and no paper gasket is supplied.
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$ 29.52
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1-2 weeks delivery time The Technautic 7428 impeller has a wedge shaft and 12 blades, designed for reliable use with dimensions of 65 x 41 mm and a 16 mm shaft diameter. Grease and gasket details are not specified for this model.
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$ 51.44
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1-2 weeks delivery time The Technautic 7429 impeller comes pre-greased and requires additional grease on the pump housing, cover, and impeller to prevent dry running damage and improve suction. It measures 95 x 63 mm, has a 25 mm spline shaft, 12 blades, and does not include a paper gasket.
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$ 103.98
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1-2 weeks delivery time The Technautic 7430 impeller is supplied with grease and needs to be further greased on the housing, cover, and impeller to avoid dry running damage and enhance suction. It has dimensions of 32 x 12.5 mm, a single flat 8.1 mm shaft, 6 blades, and no paper gasket.
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$ 27.32
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1-2 weeks delivery time The Impeller for Antibes/Maiorca is a quality replacement part engineered to guarantee compatibility and durability for those models.
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$ 67.90
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1-2 weeks delivery time The Impeller for Narwhal fits Narwhal pumps, meeting the required performance standards for the specified pump model.
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$ 112.93
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1-2 weeks delivery time The Impeller for Selva Izmir, Naxos, and Piranha pumps maintains optimal pump efficiency and is identified by its specific article number.
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$ 60.56
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1-2 weeks delivery time This impeller is compatible with Selva Ray and Pike pumps, identified by article number 58.68T4435200, and is designed to ensure dependable pump operation.
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$ 72.32
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1-2 weeks delivery time This impeller fits Zadar, Capri, Black Bass, and Sea Bass models, providing reliable water pump performance with article number 58.8095010.
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$ 62.28
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1-2 weeks delivery time This adapter kit is designed for the Johnson Pump self-priming bronze cooling impeller pump F5B-9 and is compatible with Renault and Peugeot models that feature a round mounting flange. It ensures seamless integration and reliable performance in your cooling system.
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$ 134.62
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1-2 weeks delivery time This Allpa impeller, engineered for Chrysler-Force outboards, features six blades and precise dimensions to ensure optimal performance and durability.
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$ 45.41
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1-2 weeks delivery time The Allpa impeller model has 8 blades, includes a gasket, and is suitable for systems requiring compact dimensions and efficient fluid movement.
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$ 50.48
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1-2 weeks delivery time Featuring 6 blades and including a screw, this Allpa impeller is compact and fits various marine applications.
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$ 29.15
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1-2 weeks delivery time This Allpa impeller has 8 blades, comes with a screw, and is ideal for specific pump systems with a compact profile.
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$ 26.10
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How does a flexible impeller differ from a standard water pump impeller in terms of functionality?
A flexible impeller differs from a standard water pump impeller in its design and ability to handle varying conditions. Made of neoprene or nitrile rubber, the flexible impeller blades bend and conform to changes inside the pump body, making it effective for raw water pumping in marine engines. This flexibility allows it to handle small debris and tolerate running dry briefly, reducing the risk of damage compared to a standard impeller, which is typically made of more rigid materials and has less tolerance for friction or sudden changes in conditions.
When replacing a flexible impeller, having the right spare parts is crucial to ensure proper installation and function. An impeller puller is often needed to remove the old impeller from the pump shaft without causing damage. During installation, it's important to lubricate the impeller and insert it in the correct direction to avoid damaging the blades. A proper gasket and cover must also be used to prevent leaks, and all components—such as the impeller hub—should be securely in place to maintain efficient engine cooling.
How does an impeller replacement affect the performance of a boat outboard engine?
Replacing an impeller in a boat outboard engine ensures the engine cooling system functions effectively, preventing overheating and maintaining optimal performance. Installing a new impeller helps maintain efficient water transfer within the pump body, ensuring the engine remains cool during operation. Regular replacement is crucial for reliability, especially for demanding conditions in both inboard and outboard applications.
For reliable replacements tailored to your engine, explore our full selection of Evinrude Impeller options.
What are the differences between neoprene and nitrile impellers for marine applications?
Neoprene and nitrile impellers differ in their suitability for marine applications. Neoprene impellers are ideal for most marine cooling systems due to their flexibility and durability when pumping fresh or saltwater, making them suitable for emergency situations. Nitrile impellers, on the other hand, are more resistant to oils and chemicals, making them a good idea for applications where the impeller may come into contact with fuel or oil. Both types are durable, but choosing the right one depends on the specific needs of the engine's cooling or raw water system.