7/16-20 x 4.250 12pt SS bolts

7/16-20 x 4.250 12pt SS boltsMaterial: Stainless Steel Finish: Polished Material 2: Finish 2: Origin: USA

ARP manufactures a variety of special application-specific bolt and stud kits

especially if the engine has been modified

Flywheel and Flexplate bolts play an important role in the performance and safety of race cars and street machines alike

To be used with ARP’s patentedPerma-Loc™ adjusters

which makes for amore consistent clamping force – and one that compensates forhead gasket compression when the cylinder heads are installed

They’re made from 8740 chrome moly steel

Look forARP stamped on each stud as your assurance of quality

there wasn’t a “poly lock” on the market that you didn’t have to continually tighten

ARP’s Pro Series rocker arm studs are made of premium grade 8740 chrome moly steel and heat-treated to a tensile strength of 190

There are several important reasons why ARP’s exclusive Perma-Loc rocker arm adjusters won’t loosen like others

heat-treating to 190

Those first moments an engine runs prior to building oil pressure are when damage can easily occur