Titanium Hardware Valve Cover Kit - SR20DET VTCLocation Diagram Our valve cover kit includes 3 titanium bolts, 15 titanium nuts, and 15 titanium washers for the SR20DET VTC engines. Later model SR20DET engines in the S14 S15 use bolts instead of studs. Please make sure your valve cover has studs before purchasing this kit. The kit replaces the hardware circled in the diagram above. The valve cover kit comes with clear instructions that walk you through where to place each hardware piece, ensuring