Ụlọ ọrụ a bụ onye na-emepụta isi silinda aluminom ọkachamara nke OE, nke nwere isi silinda aluminom ọkachamara ruo ihe karịrị afọ 20. Lekwasị anya n'ịdị mma na ọrụ ya. Isi silinda ahụ na-enweta asambodo nkwenye ISO16949, "isi silinda mkpuchi elu", "ndụ ogologo oge bara uru nke isi silinda" na patent ise ndị ọzọ dị irè.