While there have yet to be counterfeit or copycat fasteners found actually stamped "ARP" -- fasteners with the ARP trademarked "2000" branding have been found.
These copycat bolts have plagued ARP and likely been responsible for equipment damage and costly repairs.
ARP bolts are all manufactured in the USA and are specifically marked "ARP" along with the alloy, such as "2000" or "8740." Copycat bolts do not match the quality or tensile strength of authentic ARP bolts and have nowhere near the fatigue strength.
ARP aggressively pursues manufacturers and sellers of copycat ARP bolts and counterfeit packaging and forces them to stop. There are also competitors that copy the ARP look to deceive consumers.
Buy your authentic ARP bolts from authorized ARP retailers.
Real ARP bolts are specifically marked "ARP" on the bolt head, and usually marked with the alloy used -- "2000" or "8740"
Knock-offs have been found with no markings (blank) or just the alloy marking. (photo: Hot Rod)
Could you identify this bolt as an authentic ARP bolt or a knock-off?
Always buy from authorized ARP retailers. The quality and tensile strength of counterfeit bolts is unknown.
Authentic ARP bolts have a precision machined dimple (green arrow) on the face of the shank for precise measurement of bolt stretch (elongation) during critical application installation. (photo: Hot Rod)
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