Cylinder head stud, washer and nut set by ARP to suit Nissan TD42 series. These studs will help gain the increased head clamping required in performance applications. They will achieve a more evenly distributed and accurate torque load compared to that of head bolts by eliminating the twisting force created during tightening. This ultimately translates into higher reliability and a lower chance of head gasket failure (ARP brand - made in USA)
Recommended when running boost levels above 25psi