OEM Valve Cover Studs for your Nissan SR20DET. These studs screw into the head and the valve cover nuts bolt to them. Nice to replace when installing your new valve cover gasket as the stock ones are usually old or broken. Sold as a SET only which includes all 12 short studs and 1 long stud (for center of valve cover). If you need individually please call or email for pricing. Below is a pic of the long studs for the center.