This engine oil filter is the original component for the host tractor. It is mounted on the engine block and removes particulate contamination from the lubricating oil before it circulates through the bearings and other moving parts. A restricted filter reduces oil flow and can lead to increased engine wear. The manufacturer constructs this filter to match the original housing's thread and seal interface. On installation, lubricate the new seal with clean oil and tighten the filter by hand until the gasket contacts the mounting base, then give it an additional turn as specified.