Check valves keep fluids from flowing in the wrong direction. For a car oil filter, it keeps the engine lubricated and helps to prevent crud from going back into it.
Wal-mart has ';computers'; that allow you to select your car and tell you what filters to purchase. If you go to an auto parts store they will be able to help select a filter for you.
Be sure to know if your vehicle is 2 or 4 wheel drive and your engine size (2.5, 2.7, or 3.5L).What is the purpose of a check valve on an oil filter?
It is so the oil doesn't run back out of the filter, thus ensuring that when you re-start your vehicle, you will have oil flowing immediately, instead of having to wait for the filter to re-fill before it starts oiling the system again.What is the purpose of a check valve on an oil filter?
it,s there so there is oil in the filter at all times.
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