Made in USA
Standard High-Performance Connecting Rod Bolts Olds 307-350-403-425
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ARPPART NUMBER: 070-184-6021

Standard High-Performance Connecting Rod Bolts Olds 307-350-403-425

$1199
ShippingShips on 09/18/2026
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Oldsmobile
    Standard High-Performance Connecting Rod Bolts
  • Olds 307-350-403-425
  • 3/8"
  • 2 pc.

    Olds 225-307-350-403-425 3/8" rod bolts

    Substantially Better Than Stock

    Used in a variety of applications from rebuilt stock motors to highly modified powerplants in circle track, marine and drag racing engines – including those with superchargers and/or nitrous oxide injection systems. Rod bolts are unquestionably the most important fasteners in any engine, as they are the key to the entire rotating assembly. Rod bolts support the primary tension loads caused by each rotation of the crankshaft, ARP's rod bolts are able to exert a clamping force greater than the load imposed upon the tension. ARP's high-performance versions of replacement rod bolts come in 2 options; standard and wave-lock. Also available in Pro Series.

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    Standard High-Performance Rod Bolts: Premium grade 8740 alloy chrome moly steel that is heat-treated to provide a tensile strength in the 200,000 psi range. Cycle testing shows to be nearly five times more reliable than stock bolts.

Part TypeConnecting Rod Bolt
Product LineARP High-Performance Rod Bolts
BrandARP
Package Height0.5
Package Width4.0
Package Length6.0
Weight0.23 PG
Part CategoryPerformance Parts
Nuts IncludedYes
Connecting Rod ManufacturerStock
Connecting Rod Bolt Material8740 chromoly steel
Fastener Yield Strength (Psi)200,000
Cap Retention StyleThrough-bolt
QuantitySold as a pair
Part FitmentSemi Universal
Rod Bolt Nut StyleHex
Rod Bolt Head StyleA
Vendor Part Number184-6021
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
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