Import Cummins Nt855 Piston Ring — Buy in Bulk from Supplier in China

The Cummins NT855 piston ring set from Henweit Engine Parts Co., Ltd is a three-ring assembly designed for heavy-duty diesel engines including NTA855, KT19, and M11 models. The top compression ring has a rectangular profile with a chrome-plated surface, the middle ring is a taper-faced scraper, and the bottom ring is a two-piece oil control ring with a spring expander. Dimensions are matched to OEM bore diameters of 140 mm and piston groove depths of 3.8 mm, 3.2 mm, and 4.5 mm respectively.

These rings are manufactured from compacted graphite iron and alloyed with molybdenum for thermal stability. The chrome plating on the top ring is applied to a thickness of 0.02 to 0.04 mm, typical for high-load applications. While the supplier does not specify heat treatment, industry-standard rings of this type undergo nitriding or plasma coating to reduce friction and extend service life under extreme cylinder pressures.

Buyers include rebuilders of mining and marine diesel engines, truck fleet maintenance centers, and industrial generator operators in Africa and South America. The rings are typically sold in complete sets of 4 to 12 units per engine. Packaging is in individual polybags with part numbers labeled, then grouped in cartons. MOQ and lead time are not stated. Buyers must confirm incoterms and payment terms directly with the supplier.

Henweit Engine Parts Co., Ltd is located in Haizhu District, Guangzhou, China, with a registered office at Room 1702, Choice Plaza. The company is classified as an imported supplier with harbor trust tier, indicating basic export documentation compliance. The listing does not provide details on factory location, production capacity, workforce, or years in business. No certifications, client names, or quality control processes are mentioned.

The supplier’s focus is on engine components for Cummins heavy-duty models, with this listing centered on NT855 piston rings. There is no evidence of OEM partnerships, in-house metallurgical testing, or quality audits. Response rate and response time are not tracked. Buyers should assume this is a sourcing agent or small manufacturer without verified production controls unless confirmed directly.