The K3046 Air Filter Assembly (Sinotruk part number WG9719190001) is a high-efficiency air filtration component designed for HOWO trucks—especially those using WD615-series engines like HOWO-7 and HOWO-A7. This cartridge-style filter employs multi-stage filtration to remove contaminants such as: Dust, dirt, water, and oil mist from incoming engine air Constructed with high-performance 100% wood-pulp filter paper (and non-woven layers) ensuring durability and moisture resistance Boasts filtration efficiency above 99%, safeguarding engine performance and longevity