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    We know that your business depends on reliability from your truck, bus or fleet vehicle, which is why we’ve engineered our line of engine air intake and emission components to keep your engine and cooling systems running with power, consistency, and efficiency. We partner with top vehicle manufacturers to ensure OE quality fit, and manufacture our hoses with the latest technologies and superior materials. Whether you’re repairing a defroster, looking for cleaner-to-air connections for your intake systems, or looking to minimize your environmental impact with state-of-the-art emissions hoses, Gates has the truck and bus engine hoses for your under hood applications.