Diesel Plunger 131151-5120 A67

The Diesel Plunger 131151-5120 A67 is a precision-machined component designed for use in diesel fuel injection systems, specifically compatible with Bosch and Denso injection pumps found in heavy-duty diesel engines. It features a hardened steel body with a surface finish of Ra 0.2 micrometers and a nominal diameter of 7.00 mm, matching OEM dimensional tolerances for direct interchangeability. The part is manufactured using cold forging and precision grinding processes to ensure consistent geometry and wear resistance.

This plunger is typically made from high-carbon chromium steel, such as AISI 52100 or equivalent, with a hardness range of 58-62 HRC after heat treatment. The surface is chrome-plated to a thickness of 8 to 12 micrometers, which improves corrosion resistance and reduces friction under high-pressure conditions. In industry practice, such plungers are expected to maintain dimensional stability under pressures up to 2000 bar and operate reliably for 5000 to 8000 hours before wear-related failure. No certification documents are listed, but the manufacturing process aligns with standard diesel component production norms.

Buyers include diesel engine repair shops, agricultural machinery distributors, and marine equipment suppliers who require replacement parts for engines in trucks, tractors, and generators. The plunger is supplied in bulk, typically packed in anti-corrosion paper with individual polyethylene sleeves. Trade terms such as FOB Fuzhou and CIF are available, but MOQ and lead time are not specified. Buyers should request confirmation of batch traceability and surface hardness test reports prior to ordering.

Chen Chen Diesel Parts Plant is located in Fuzhou, Fujian Province, China, and operates as a manufacturer of diesel fuel injection components including plungers, barrels, nozzles, and delivery valves. The supplier is classified as imported and harbor-trusted, indicating verified export activity and logistics reliability. No claims are made regarding years in business, employee count, revenue, or client names. The listing confirms direct manufacturing capability but provides no documentation of certifications or quality management systems.

The supplier does not list response rates or average reply times, suggesting limited communication infrastructure or responsiveness. There is no evidence of third-party audits, ISO certifications, or test reports provided in the source data. Buyers should treat this as a direct manufacturer without verified quality assurance signals beyond its export history. All product claims must be confirmed through physical inspection or third-party testing before large-scale procurement.