ARP 1345002 High Performance Series Main Bolt Kit For Select Chevrolet Small Block Applications, 2-Bolt Main, Small Journal

★★★★★ 4.7 77 reviews

$46.78
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$46.78
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Free shipping Free 30-day returns

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Product details

Management number 208145660 Release Date 2026/03/22 List Price $18.71 Model Number 208145660
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Far superior to any other main bolt kit offered for use in competition engines, ARP's High Performance Series main bolts are designed to meet the exacting standards and demands of professional engine builders. Forged from 8740 chrome moly, these bolts feature generous under-head radius and rolled threads for the utmost reliability. The threads are rolled after heat-treating, so their fatigue life is about 1000% longer than most main bolts that are threaded prior to heat-treating. With a nominal rating of 180,000 psi, these bolts are a premium replacement for OEM fasteners, and the kit comes complete with parallel-ground and hardened washers.

  • High Performance Series main bolts are a premium replacement for OEM fasteners
  • Designed to meet the exacting standards and demands of professional engine builders
  • Forged from 8740 chrome moly steel, with generous under-head radius and rolled threads
  • Rated at 180,000 PSI, which is considerably stronger than Grade 8 hardware
  • 1000% longer fatigue life than most other main bolts
UPC 672036001858
Size 3/8"-16 UNC
Brand ARP
Model ARP 1345002
Material Alloy Steel
Head Type Hex
Head Style Hex
Metal Type Alloy Steel
Item Weight 1.8 pounds
Thread Size 3/8"-16 UNC
Thread Type Unc
Manufacturer ARP
Thread Class 3A
Thread Style Right Hand
Fastener Type Hexagon Bolt
Item Hardness Grade 8
Exterior Finish Painted
OEM Part Number 134-5002
Item model number 134-5002
Manufacturer Grade Premium
Maximum Shear Strength 108000
Manufacturer Part Number 1345002

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