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This ARP head stud kit is specified for the 426 Hemi and uses 1/2-inch studs to secure cylinder head clamping. Intended as a direct fastener upgrade for high-stress V8 service, the kit replaces conventional head bolts with heavy-duty studs to provide consistent clamping force during assembly and engine operation. It's a straightforward hardware upgrade for 426 Hemi cylinder head installations.
ARP 426 Hemi 1/2in Head Stud Kit
