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127 4cr9si2 valve steel products are offered for sale by suppliers on Alibaba.com, of which intake & exhaust valves & valve tappets accounts for 94%, other truck engine parts accounts for 1%. A wide variety of 4cr9si2 valve steel options are available to you, such as for toyota, peugeot and honda.You can also choose from 1.6, 3 and 1.8 4cr9si2 valve steel,as well as from 2012-2016, 2013-2016, and 2010-2016 4cr9si2 valve steel,and whether 4cr9si2 valve steel is black, or silver.