Import Diesel Parts Plunger Denso 185-7 — Buy in Bulk from Supplier in China

The Diesel Parts Plunger Denso 185-7 is a precision-machined fuel injection component designed as a direct replacement for Denso injectors used in Mitsubishi, Hino, Isuzu, and Kubota diesel engines. The plunger is manufactured from high-carbon chrome steel with a hardened surface finish to withstand the extreme pressures and abrasive wear of diesel fuel systems operating at over 1,800 bar. This part is one of several in a range of fuel pump components offered by the supplier.

The plunger's diameter tolerance is held within ±0.002 mm, and the surface finish meets Ra ≤ 0.08 μm to ensure tight sealing against the barrel. The material composition follows industry-standard AISI 52100 or equivalent, with a case-hardened depth of 0.3 to 0.5 mm. Typical applications include 4D31, 4D35, 6D14, and 6D17 diesel engines, where the plunger works in tandem with a precision barrel and delivery valve. The part is not a complete injector but a core component requiring assembly into an existing pump housing.

Buyers are primarily diesel engine rebuilders, aftermarket parts distributors, and industrial equipment maintenance teams in Southeast Asia, Africa, and South America. The part is sold in bulk quantities, with packaging in anti-corrosion paper and sealed plastic bags inside cartons. Trade terms are typically FOB Xiamen or CIF port, with lead times of 15 to 25 days after order confirmation. Minimum order quantities are negotiated per engine model and volume.

Diesel Injection Parts Plants is a manufacturer based in Putian, Fujian, China, specializing in fuel injection components for commercial diesel engines. The company's profile confirms production of plungers, barrels, and delivery valves but provides no details on workforce size, annual output, or quality control processes beyond general manufacturing claims. The trust tier is harbor, indicating basic verification of business registration and address, with no response rate or average response time available.

The supplier lists multiple plunger variants for Denso, Mitsubishi, and Isuzu systems, suggesting capability in precision machining and surface treatment. No certifications are claimed, and no test reports or material traceability documentation are referenced. The company operates through direct inquiry, with contact provided via WhatsApp, indicating a low-volume, inquiry-driven sales model rather than a catalog-based distributor.