4120L-10M Fuel Filter

4120L-10M/10MB is a highly efficient, large-capacity spin-on diesel fine filter (also known as a secondary filter). Its core function is to remove extremely fine particulate impurities and moisture from diesel fuel, providing the highest level of protection for high-pressure common rail fuel injection systems (such as those in electronically controlled engines). It is a critical component for ensuring the smooth operation and extending the service life of modern diesel engines.