ARP head stud kit for the Nissan CA16, CA18DE and CA18DET four-cylinder with undercut studs. The undercut shank improves fatigue strength and clamping load to seal the head gasket under boost.
Specifications
| Type | Head stud kit (undercut) |
| Engine | Nissan CA16/CA18DE/CA18DET |
| Fastener | Studs with nuts |
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