LF667 is a screw-on type oil filter designed to be compatible with heavy-duty diesel engines from brands such as Cummins, Caterpillar, and Volvo. Its core function is to intercept impurities like metal shavings and dust in the oil, protecting key components such as the engine crankshaft and camshaft. It is suitable for use in harsh conditions such as trucks, construction machinery, and generator sets.