OptiTorque Patriot Series Main Stud Kit - Hex Nuts - 4-Bolt Mains - Chromoly - Black Oxide - Dart Big M - Splayed Cap Bolts - Big Block Chevy PTN6-604BL or larger bore

or larger bore

the LK9100K attaches in a factory-like manner to stock or Holley oil pans and includes a block plate for starter alignment and a dust shield

Length: 46" To 51"

62 in Rectangle Port

OptiTorque Patriot Series Main Stud Kit - Hex Nuts - 4-Bolt Mains - Chromoly - Black Oxide - Dart Big M - Splayed Cap Bolts - Big Block Chevy PTN6-604BL or larger boreProduct Description: Main Stud Kit Patriot Series Hex Nuts 4 Bolt Mains Chromoly Black Oxide Dart Big M Splayed Cap Bolts Big Block Chevy OptiTorque produces premium quality fasteners for a wide range of automotive applications. From stock rebuilds to hard core racing builds, OptiTorque fasteners are USA made and designed, featuring premium materials and designed to meet or exceed OEM specs.