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ARP Pro Series Main Bolts

5.0 out of 5 stars 14 Customer Reviews

ARP Pro Series main bolts are application-specific and rated at 190,000 psi. Designed for use in competition engines, as well as to meet the exacting standards and demands of professional engine builders, ARP bolts are forged from 8740 chromoly steel and feature a reduced wrenching head, large underhead radius, and rolled threads for the utmost in reliability. The threads are rolled after heat-treating which gives them about 2,000 percent better fatigue strength than most main bolts that are threaded prior to heat-treating. Hardened parallel-ground washers are included with each kit.

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ARP Pro Series Main Bolts 155-5201

Made in the USA

ARP Pro Series Main Bolts 155-5201

ARP Pro Series Main Bolts 155-5201

Main Bolts, Pro Series, 2-Bolt Main, Ford, Big Block FE, 390-427-428, 12 Point, Kit

Part Number: ARP-155-5201

5.0 out of 5 stars ( 9 )

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ARP Pro Series Main Bolts 234-5201

Made in the USA

ARP Pro Series Main Bolts 234-5201

ARP Pro Series Main Bolts 234-5201

Main Bolts, Pro Series, 12-Point, 4-Bolt Main, Chevy 1967-2002, 350, Kit

Part Number: ARP-234-5201

Not Yet Reviewed

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ARP Pro Series Main Bolts 140-5002

Made in the USA

ARP Pro Series Main Bolts 140-5002

ARP Pro Series Main Bolts 140-5002

Main Cap Bolts, Pro Series, Chrysler 273-440 Wedge, 12 Point, kit

Part Number: ARP-140-5002

5.0 out of 5 stars ( 3 )

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