2.5L, RB20 RB20DE, RB20DET, 2.5L, RB25, RB25DE, RB25DET inline 6 cylinder. You are Buying One Set ARP 202-4301 Head Stud Kit for Nissan 2.0L & 2.5L inline 6 Engine. Stud Size Applications: Nissan. - Head Style: 12-Point Nuts.
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