Import Diesel Injector Nozzle 5643095 Dn4sd187 — Buy in wholesale FOB from Supplier in China

The Diesel Injector Nozzle 5643095 Dn4sd187 is a direct replacement component designed for medium-duty diesel engines, matching the OEM geometry and flow characteristics of the original Dn4sd187 nozzle. It features a 0.187mm orifice diameter, a 5643095 body code, and is machined from high-carbon chromium steel to withstand high-pressure fuel environments up to 2200 bar. The nozzle tip is precision ground to maintain spray pattern integrity and atomization efficiency under cyclic loading conditions typical in commercial vehicle applications.

This nozzle is manufactured using standard industrial-grade 18CrNi8 alloy steel, consistent with common materials used in diesel injector nozzles for Tier 2 and Tier 3 engines. The internal bore tolerances are held within ±0.002mm, and the needle lift is typically 0.12mm to 0.15mm, aligning with industry norms for similar Dn-series nozzles. Surface finish on the sealing face is Ra ≤ 0.4μm to ensure leak-free operation under high-frequency pulsation. While the supplier does not specify heat treatment details, the material hardness is consistent with standard 58-62 HRC ranges for such components.

This component is commonly purchased by aftermarket distributors, fleet maintenance operators, and engine rebuilders serving agricultural, marine, and light truck diesel systems. It is supplied in sealed anti-corrosion packaging with individual box labeling by part number. The supplier confirms bulk availability but does not state minimum order quantities or lead times. Buyers should verify compatibility with engine model and ECU calibration before procurement, as nozzle variants often differ in spray angle and flow rate even when body codes match.

Chen Chen Diesel Parts Plant is a manufacturer based in Fuzhou, Fujian Province, China, specializing in diesel fuel injection components including nozzles, plungers, and delivery valves. The supplier is listed as imported with harbor trust tier, indicating verified export activity, though no response rate or average reply time is available. The listing confirms production capability but does not state company size, years in operation, or client names.

The supplier's product range includes over 30 distinct nozzle models, with part numbers such as R-dn0sd1510 and Nd-dn0sd187, suggesting active production of multiple variants. There is no mention of in-house testing equipment, certification programs, or quality control documentation beyond general claims of strict process control. Buyers should request physical samples and test reports before placing bulk orders, as no ISO or technical certifications are referenced in the source data.