ARP 154-5004 ARP High Performance Series Main Bolts Intercoolers Some applications may require recalibration

Some applications may require recalibration of engine management for full benefit

spring compressor recommended for loaded assemblies

ARP main studs are machined from 8740 chromoly steel

converter stall speed

Upgrade from that rusty factory cover for less than you'd expect

ARP 154-5004 ARP High Performance Series Main Bolts Intercoolers Some applications may require recalibrationThe ARP 154 5004 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 07330 is configured for its specific application with attention to fitment requirements. ARP main bolts are machined from 8740