ARP Connecting Rod Bolt Set Of 8 (4 rods) Part Number 200-6209 Fits : Various Aftermarket Connecting Rods ARP 2000 Material Is An Upgrade From 8740 Chrome Moly Capable Of Achieving A Clamp Load At 220,000 PSI Used Widely In Circle Track And Drag Racing Use The Specs And Chart Pictured To Determine Fitment Specs : Material ARP2000 1) Thread Size 3/8˝ 2) UHL 1.600˝ 3) Thread Length 0.600˝ 4) Grip Length 0.145˝ 5) Head Height 0.388˝ 6) Socket Size 7/16 12pt 7) Collar Dia. 0.555˝ Message Us With Any Questions See Our EBAY STORE For More ARP And Other ENGINE And PERFORMANCE Items