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About Diamond Engineering Primary, Inspection Covers and Inner Primary 12-Point Polished Stainless Engine Bolt Kit

Diamond Engineering Primary, Inspection Covers and Inner Primary 12-Point Polished Stainless Engine Bolt Kit

  • Polished to a mirror finish
  • Custom 450 stainless steel
  • Groove kits contain recessed flange washers
  • 12-Point bolts have 180,000 psi tensile, which is 20% stronger than Grade 8
  • UNJ3A rolled threads
  • Made in the USA.

Warning:  California Proposition 65

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