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Gates molded lower hump hose for Western Star 4900 Series Caterpillar 3406 (1980–1990) diesel applications serves the lower cooling pathway between engine and hump connections. This replacement matches the specified molded routing to maintain coolant flow. Replace aged or damaged hoses to keep the cooling system functioning reliably on heavy-duty trucks and equipment.
Gates 80-90 Western Star 4900 Series Caterpillar 3406 Diesel Lower Hump Hose
