3919041 piston price

The 3919041 piston is a critical component typically used in Cummins 6BT 5.9L engines. You must verify the bore diameter (102mm), the compression height, and the combustion bowl geometry. Ensure the piston is made from high-strength aluminum alloy with a Ni-resist insert in the top ring groove to prevent wear and prolong engine life.

For automotive and engine parts, prioritize suppliers certified under IATF 16949:2016, which is the international standard for automotive quality management systems. Additionally, ensure the products meet ISO 9001 standards. Requesting a Material Analysis Report and a Dimensional Inspection Report for each batch is essential to ensure metallurgical integrity.

Request information regarding the surface treatment, such as graphite coating or tin plating, which reduces friction during the break-in period. Ask for thermal expansion test data and hardness testing results (Brinell or Rockwell). It is highly recommended to order a sample for a fitment test and metallurgical lab analysis before committing to a large-scale order.

Pricing is primarily driven by material costs (aluminum alloy market rates), the manufacturing process (casting vs. forging), and the inclusion of piston rings and pins. Bulk orders typically see a 15-25% discount when exceeding 500 units. Be wary of prices significantly below market average, as they may indicate the use of recycled scrap aluminum instead of virgin alloys.

The primary risks include material fatigue due to sub-standard alloys and dimensional inaccuracies that can lead to catastrophic engine failure. To mitigate this, use Made-in-China.com's Secured Trading services and insist on third-party inspections (like SGS or Intertek) at the factory before the final balance payment is made.

Pistons are sensitive to moisture and physical impact. Negotiate for VCI (Volatile Corrosion Inhibitor) packaging or anti-rust oil coating. Ensure the supplier uses individual inner boxes with foam inserts and heavy-duty palletized wooden crates for sea freight to prevent deformation or oxidation during transit.

Verify the HS Code (typically 8409.91 or 8409.99) to determine import duties in your country. Be aware of anti-dumping duties that some regions apply to Chinese aluminum products. Ensure the supplier provides a Certificate of Origin (CO), which may help in claiming preferential tariff rates under specific Free Trade Agreements.

Always verify the supplier's Business License and Export Qualification. Conduct transactions through reputable B2B platforms like Made-in-China.com, utilizing their Audit Reports to check the supplier's production capacity and audited status. Avoid direct wire transfers to private accounts; always use corporate bank accounts verified by the platform.