Crankcase Thru bolt Kit for Porsche 911-930 Turbo, 3.6L & 3.8L air cooled engines

Crankcase Thru bolt Kit for Porsche 911-930 Turbo, 3.6L & 3.8L air cooled enginesThere are many important reasons to use ARP main stud kits, including the elimination of main cap walk and fretting, as well as protecting the threads in your engine block. All kits come complete with hardened parallel ground washers and high quality nuts. Some applications have provisions for mounting windage trays and have specially designed standoff studs with serrated lock nuts to position the windage tray and lock it securely in place. The studs

You will also note that ARP offers specially undercut studs forseveral engines

Facilitates optimum sealing of gasket surfaces

12-point head design and larger than stock shank diameter for increased strength andimproved flywheel register

with handy 12-pointor standard hex heads

A premium grade 8740 alloy chrome moly steel is used to manufacture ARP High Performance connecting rod bolts

Both models feature a large diameter

Look forARP stamped on each stud as your assurance of quality

ARP offers two styles of Flexplate bolts: premium grade Pro Series rated at 190

That’s whythe fastener experts at ARP have developed special bolts that are far superior to OEM hardware

as well as hex or 12-point heads

Developed for racers who leave nothing to chance

Wide underhead flange and companion washers provide even load distribution