Name: engine valve Style: 3136D041 3136D031 3142A051 3142A072 3142L072 3142D061 3142H041 2418F701 3142D041 3142D031 Brand: Perkins Material: 4Cr9Si2, 21-4N MOQ: 300 pieces Packing: perkins packing or according to customer' s requirment Others: we also can supply matched guide and seat for you.