Valve Spring
Fits Exhaust; Loc: Exh.; Conical design; 75lbs. Min. Closed (Outside); 250lbs. Min. Open (Outside); 6.3 Total Coils (Outside)or Intake; Loc: Int.; Conical design; 75lbs. Min. Closed (Outside); 250lbs. Min. Open (Outside); 6.3 Total Coils (Outside)