ARP 154-5201 ARP High Performance Series Main Bolts Tune-Up Kits Header bolts in standard applications

Header bolts in standard applications are prone to loosening from thermal cycling and gasket compression

Cast from high-strength aluminum alloy with a matte black or gunmetal finish

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ARP 154-5201 ARP High Performance Series Main Bolts Tune-Up Kits Header bolts in standard applicationsThe ARP 154 5201 ARP High Performance Series Main Bolts reinforces the engine's lower end by providing consistent, repeatable main bearing cap clamping. These main bolts prevent cap walk and main bearing bore distortion at elevated RPM where factory fasteners may allow crankshaft deflection and bearing clearance changes. Part 40098 is configured for its specific application with attention to fitment requirements. ARP main bolts are machined from 8740