WL WLT Cylinder Head for Mazda OEM: WL31-10-100H Valve number: 12 Displacement: 2.5D/2.5TD G.W.: 16KGS ... : valve guide& valve seat,DXdXW: 570*260*220,G.W.: 16KGS,Material: aluminum alloy,Outer Packing: carton--Shanghai Niuzhang Auto Engine Parts Co., Ltd ... Liner, Piston & Pin, Piston Ring, Engine Bearing, Series of Valve Seat, Valve Guide, oil pumps, water pumps etc. Most of them pass ...