Auto Barn
Est. 1957
ARP

ARP 1/2-13 in. Thread, 3.50 in 12 Point Bolts

$45.39

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ARP 656-3500 main bolts. 1/2-13 thread, 3.50 in. length with 12-point heads for easier access. Meets Prop 65.

Key Features

  • 1/2-13 thread size — standard for many engine applications.
  • 3.50 inch length — suitable for specific main bearing cap applications.
  • 12-point head — allows for a 60-degree wrench turn, useful in confined spaces.
  • High-strength steel construction — ARP fasteners are known for reliability.
  • Meets Prop 65 requirements.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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ARP 1/2-13 in. Thread, 3.50 in 12 Point Bolts

$45.39