Import Cylinder Head — Buy in Bulk from Supplier in China

The cylinder heads supplied by Holxin International Co., Ltd. are manufactured to match OEM specifications for over 400 engine models, including ISUZU, MITSUBISHI, TOYOTA, and COMMINES series. Each head is cast using high-grade aluminum alloy or cast iron, depending on engine type, with valve seat inserts and guide bores machined to ±0.02 mm tolerance. Dimensions and port shapes align precisely with original equipment, ensuring direct fitment without modification.

Material composition follows industry-standard alloys such as A356.0 for aluminum heads and GJL-250 for cast iron variants. Surface finish on combustion chambers and valve seats meets typical engine rebuild requirements, with hardness values ranging from 180 to 220 HB for cast iron and 85 to 95 HRB for aluminum. Cooling jacket integrity and water passage routing are verified against factory blueprints to prevent overheating or coolant leakage under load.

These heads are primarily sourced by engine rebuilders, heavy equipment maintenance providers, and aftermarket distributors in Europe, the Middle East, and Africa. Orders are typically fulfilled in bulk, with packaging in corrugated cartons or wooden crates depending on volume. Trade terms include FOB Shanghai, with lead times of 25 to 40 days after deposit confirmation. MOQ varies by model but generally starts at 10 units per SKU.

Holxin International Co., Ltd. operates from Shanghai with a focus on engine components for commercial and industrial applications. The company is verified as an importer with harbor-level trust signals and has supplied parts to over 30 countries over six years. Their operations emphasize OEM reproduction, with full control over casting, machining, and inspection processes. No claims are made regarding factory size, employee count, or annual revenue.

The supplier does not list certifications beyond ISO 9001 and ISO/TS 16949:2002, nor does it provide test reports or third-party audit summaries. Response rate and average reply time are not tracked in the listing, indicating limited customer service infrastructure. All product claims are tied to engine model compatibility, not brand reputation or exclusive partnerships.