The Rein Oil Pan Kit - 137979 is a comprehensive kit designed for maintaining and servicing a car's oil pan. It includes various essential components that are necessary for proper functioning and longevity of the oil pan. The kit consists of six contents, including a gasket, drain plug, drain plug gasket, oil pan, oil pan bolts, and oil pan drain plug. These components are crucial for ensuring a secure seal and preventing oil leaks from the oil pan. The gasket serves as a barrier between the oil pan and the engine, while the drain plug and gasket allow for easy draining of old oil during oil changes. The oil pan itself is a vital component that holds the engine's oil and keeps it at the proper level for lubrication. The bolts and drain plug are necessary for securing the oil pan to the engine. This kit is an essential tool for any car owner or mechanic looking to properly maintain their vehicle's oil pan and ensure its optimal performance.