An Oil Filter Base is a metal housing that holds the oil filter in place. It is typically located on the engine block or oil pan. The oil filter base has a threaded opening that the oil filter screws into. Attributes:• Ensures that the oil filter is securely attached and will not come loose during operation• Manufactured to precise specifications and is built for durability and reliabilityApplications:An Oil Filter Base directs the flow of oil to and from the oil filter.