Filter and plug wrenches allow drivers to do their own oil filter and plug replacements. Your oil filter functions to separate the grit from engine oil. It is important that you replace your oil filter every three to six months. There are an enormous amount of different types of filter and plug wrenches on the market to suit any type or model of car. Yet, they are all similar so one set of filter and plug wrenches should be all you need. Browse our collection below.