Vauxhall/Opel 2.0L 16V Rod Bolt Kit
ARP Pro series Wave-Loc rod bolts have a symmetrical "wave" on the shank that eliminates stress risers. These bolts also have a .0005 to .0070 in. interference fit to guarantee rod cap alignment and actually strengthen the connecting rod.
Opel / Vauxhall 2.0L 16V M9 ARP 209-6003 Connecting Rod Bolts. Pro Series Wave-LOC Rod Bolts ARP2000. For the most severe applications, in conjunction with aftermarket I-beam rods, ARP has developed the “Pro” Series Wave-Loc bolts. These ultra heavy-duty rod bolts are made from a special material designated ARP2000. It has approximately 200% the fatigue life of 8740 chrome moly steel and has a tensile strength of about 220,000 psi, and is capable of more than 12,000 lbs. C lamping force because there are fairly wide tolerances in factory bolt holes, the bolt must be able to fit snugly and a knurl is applied. Unfortunately, these knurls cut deep into the bolt material, leaving sharp edges and enormous “stress risers” that promote failure. That’s why ARP developed the ARP Wave-Loc design that features symmetrical waves and provides an effective interference fit without creating stress risers in the bolt or the rod.