Cylinder Head Kit; Includes Head Bolts And Gasket. Stand Pipe Must Be Purchased Separately , Due To The Possibility Of Prior Repairs, Dowel Size On Cylinder Head Must Be Confirmed Before Ordering , For Heads With 20MM Dowel Holes , For Standard Bore; 0.010/0.25mm And 0.020/0.50mm Overbore Engines , When Changing Head Gaskets It Is 'Mandatory' That The 9229 Seal Kit Is Replaced