This LF-3349 oil filter is the engine lubrication filter element for heavy trucks. It filters metal debris, carbon deposits and other impurities in engine lubricating oil, keeps the engine oil clean, reduces wear of crankshaft, bearing and other moving parts, and extends engine service life. It adopts high-efficiency filter paper with stable dirt holding capacity. The high-performance rubber seal prevents oil leakage. Each oil filter passes filtration efficiency and sealing test before delivery. It is an essential replacement spare part for truck engine lubrication system maintenance.