Shacman oil filter manufacturers

Buyers must verify the OEM Part Number (e.g., VG1246070031 or 61000070005) against the engine series, such as Weichai WP10, WP12, or Cummins ISM11. Ensure the thread size and gasket diameter match the filter head to prevent oil leaks. It is highly recommended to request a cross-reference chart from the supplier to ensure the filter media meets the micron rating required for high-pressure common rail systems.

Quality filters should utilize high-efficiency wood pulp or synthetic fiber filter paper (often sourced from brands like Ahlstrom) to ensure a high dust-holding capacity. The housing must be made of cold-rolled carbon steel with a thickness of at least 0.8mm-1.0mm to withstand high pulse pressure. Additionally, the bypass valve and anti-drainback valve must be made of high-temperature resistant silicone or nitrile rubber to prevent engine dry starts.

Suppliers should ideally hold IATF 16949:2016 certification, which is the international standard for automotive quality management systems. For the product itself, look for ISO 4548 test reports, which cover filtration efficiency, pressure drop, and life expectancy. If exporting to specific regions, ensure the supplier provides CE or EAC (Eurasian Conformity) marks if required by the destination country's customs.

Genuine parts usually feature anti-counterfeit labels, laser-etched serial numbers, and branded packaging. However, high-quality aftermarket filters from reputable factories on Made-in-China.com can offer similar performance at a lower cost. Buyers should request laboratory test results comparing the aftermarket filter's burst pressure and filtration fineness to the original equipment manufacturer (OEM) standards.

The biggest risks include counterfeit goods and shipping damage. Filters are susceptible to denting, which compromises structural integrity. To mitigate this, insist on reinforced double-wall corrugated export packaging and use Trade Assurance services on platforms like Made-in-China.com to protect your payment until the goods are inspected and received.

For Shacman oil filters, the MOQ typically ranges from 50 to 500 units. Negotiate based on annual volume rather than a single order to secure a 10-15% discount. Ask for tiered pricing (e.g., 500, 1000, and 5000 units). If you are a distributor, request free samples for initial quality testing, though you may need to cover the air express shipping costs.

Due to the weight and volume of oil filters, Sea Freight (LCL or FCL) is the most economical method. For landlocked regions in Central Asia, railway transport (China-Europe Railway Express) offers a balance between cost and speed. Ensure the supplier provides a Clean Bill of Lading and accurate HS Codes (typically 842123) to avoid customs delays and incorrect duty applications.

Always conduct a factory audit or hire a third-party inspection agency (like SGS or Intertek) to verify the supplier's production capacity. Use secure payment methods such as Letters of Credit (L/C) for large volumes or Escrow-based payments for smaller batches. Prioritize Audited Suppliers on Made-in-China.com who have undergone comprehensive on-site verification.