TECHNICAL SPOTLIGHT

Your engine’s impeller plays a quiet but critical role every time you turn the key. It is the heart of the raw water cooling system, pulling seawater through the engine to keep temperatures stable. Choosing the wrong impeller, or delaying replacement, is one of the most common causes of marine engine overheating and unexpected breakdowns. With so many engine brands, part numbers, and aftermarket options available, it is easy for boat owners to feel unsure about which impeller is actually r …

Marine engine overheating is one of the most common and costly issues boat owners face. Whether you run an outboard, sterndrive, or inboard diesel, excessive heat can quickly turn a good day on the water into an expensive repair job. The good news is that most overheating problems are predictable, preventable, and linked to routine maintenance items. Understanding why marine engines overheat and how to stop it happening is key to protecting your engine, avoiding downtime, and extending its servi …