Engine Piston used for Opel Auto Engine No.: Z18XE/ Z18XEL OE No.: 90510163 Diameter(mm): 80.5mm Length(mm): 44.7mm CYL No.: 4 Advantages: Heat treatment: T5/ 6 Material: Aluminum Ally AC8A-1 Surface Treatment: Requested by customer Warranty: 1year Certification: ISO9001-2008 OEM accept Term: FOB Yiwu, China Payment: T/T in advance Delivery: 15~60days upon payment get Packing: Plastic bag each piston, Inner Box each set, And Blank Carton