Import Diesel Injection - Diesel Nozzle — Buy in Bulk from Supplier in China

The diesel injection nozzle from China Lutong Parts Plant is a direct-replacement component designed for common rail and unit injector diesel engines. It features a needle valve with a 0.12 mm diameter orifice, manufactured from hardened tool steel with a surface hardness of 62 HRC. The nozzle body is forged from high-purity 4140 steel and machined to ±0.005 mm tolerances. It is compatible with diesel fuel meeting ISO 8217 standards and operates under pressures up to 2000 bar.

The nozzle is not coated with a proprietary surface treatment; instead, it uses a standard nitriding process to enhance wear resistance. The needle-to-body clearance is 0.002 mm, a standard value for heavy-duty injectors. Unlike some suppliers claiming ISO certification, this product does not carry documented compliance with ISO 15051 or SGS. Its durability comes from material selection and precision machining, not marketing claims.

This nozzle is sourced by rebuilders of agricultural tractors, marine diesel engines, and industrial generators requiring cost-effective replacements. Buyers typically order in lots of 100 to 500 units, packaged in sealed anti-corrosion bags with individual part numbers. Lead time is 25 to 30 days after order confirmation. Incoterms offered are FOB Xiamen, with payment via T/T or L/C. No technical documentation is included by default; it must be requested.

China Lutong Parts Plant is a manufacturer located in Putian, Fujian province, with no disclosed history of export experience or international certifications. The supplier is categorized as imported, indicating it has engaged in export activity, but no documentation of quality systems, audits, or client lists is available. The company does not claim to be a Tier 1 supplier or to serve OEMs. Its operational focus appears to be on volume production for aftermarket replacement markets.

There is no public information on workforce size, production capacity, or R&D activity. The supplier does not list any test equipment, calibration labs, or in-house quality control protocols. The product description references ISO and SGS, but these are unverified claims. The supplier’s trust tier is harbor, meaning only basic legal registration has been confirmed. Value is derived from low cost and availability, not documented technical capability.