Ford F350 Super Duty Fuel Filter - AutoZone Order Ford F350 Super Duty Fuel Filter online today. Free Same Day Store Pickup. Check out free battery charging and engine diagnostic testing while you are in store. 7 Power Stroke Fuel Filter Replacement Procedures 7 power Stroke Fuel Filter Replacement How to Replace Fuel Filter on a 7 Power Stroke. The 7 Power Stroke has a single fuel filter located near the front of the engine in the valley. It features a convenient drain valve and tube system that allows the housing to be drained remotely.