THIS IS THE OUTTER OF THE TWO SPRINGS ON EACH VALVE. ONE ENGINE HAS TWO OF THIS SPRING. R2090 @ e HEAVY_DUTY VALVE_SPRINGS WITH_WIDER COIL_SPACING FOR_HI_LIFT_CAMS IN_50_70_HEADS (GREAT_STOCK_REPLACMENT) (S1129) ALSO WORK TO REPLACE STOCK 50 AND 70 STOCK SPRINGS AND ADD SOME MORE TENSION S1129