ARP 154-5201 ARP High Performance Series Main Bolts Tune-Up Kits and daily drivers running small-block

and daily drivers running small-block and big-block V8s

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

risk-free way to add meaningful power to your truck or SUV

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ARP 154-5201 ARP High Performance Series Main Bolts Tune-Up Kits and daily drivers running small-blockThe 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