Cylinder Head Bolt Kit for Chevrolet Mark IV with Late Bowtie aluminum, Iron Dart, Pro-1, Pro Top Li

Cylinder Head Bolt Kit for Chevrolet Mark IV with Late Bowtie aluminum, Iron Dart, Pro-1, Pro Top LiHIGH PERFORMANCE SERIESHigh Performance head bolts are available with a reduced wrenching hex or 12 point and wide area flanged head that eliminates theneed for valve train removal to facilitate cylinder head retorquing. All High Performance Series bolts are 180,000 psi (which is 15%stronger than Grade 8) and kits come complete with hardened parallel ground washers. PROFESSIONAL SERIESAll Pro Series bolts are cold forged to ensure molecular integrity,

The nuts feature a wide base for better load distribution and sealing

as well as protecting the threads in your engine block

large underhead radius and rolled threads for the utmost in reliability

self-locking nuts

Specially drilled “NASCAR” models are available for those who wish to safety wire their header bolts to prevent loosening

Precision rolled threads prevent galling while promoting more consistent torque loading

Look forARP stamped on each stud as your assurance of quality

ARP manufactures a variety of premium grade bolt and stud kits to facilitate installation of exhaust headers including the popular stainless stud kit with 12-point nuts

marine and drag racing engines – including those with superchargers and/or nitrous oxide injection systems – ARP offers replacement rod bolts in three different models

you may choose betweenconventional hex style or the space-saving 12-point nuts

low-profile design

000 psi for the ARP2000® material