This engine oil filter removes particulate and combustion byproducts from the lubricating oil before it circulates through the engine bearings and cylinder walls. It mounts on the engine block and receives oil from the pump; trapped contaminants prevent abrasive wear on the crankshaft and connecting-rod journals. A clogged filter forces the bypass valve to open, allowing unfiltered oil to reach the bearings, which accelerates scoring and reduces engine life. The filter is constructed to the manufacturer's original specifications for media density and bypass-valve cracking pressure, ensuring that the oil remains within the correct flow and filtration range for the engine. On installation, lubricate the new gasket with clean engine oil and tighten the housing to the torque specified for the application.