ARP Opel Main Stud Kit - 2.0L 16-Valve R010003YS O-rings on each side help

O-rings on each side help keep the bushings in place while installing and also help keep dirt out

TCI® Transmission products are specifically engineered to crank out race-winning power mile after grueling mile

Utilizing larger (3) -8AN inlet/outlet/return ports to accommodate increased flow

double silicone jacket to protect against current leakage while protecting the wire from oil and solvent damage

ARP Opel Main Stud Kit - 2.0L 16-Valve R010003YS O-rings on each side helpARPs product line contains thousands of part numbers, and has expanded to include virtually every fastener found in an engine and driveline. These range from quality high performance OEM replacement parts to exotic specialty hardware for Formula 1, IndyCar, IMSA, NASCAR and NHRA drag racing and marine applications. Since 1968, ARP is the fastener of champions and the world leader in fastener technology. Product Description: Main Stud Kit 12 Point Nuts