QMB139 47mm Big Bore Cylinder Kit Non-EGR with64mm Valve Cylinder Bore: 47mm / Non-EGR Cylinder / Installed 64mm Valve Cylinder Sleeve Outer Diameter: 52.7mm / Wrist Pin Diameter: 13mm / Total Piston Height: 34.4mm Compression Height (wrist pin hole to top of piston): 17.25mm / Cylinder head&base Gaskets Left CTV cover gasekts:15.75 Inches(short case) / 47mm Pistons sets(Piston, rings, pin, cir clips) 16*13 Roller weights / Head Stud bolts / Oil pump& prokets(33teeth)