Used incomplete valve spring set.  ***ONLY 15 SPRINGS!!!!.  This is a stock replacement beehive valve spring set for LS motors with standard camshafts : 5.7L LS1, 6.0L LQ4/LQ9, 4.8L/5.3L engines.  1.800" installed height.  Works with all factory retainers, locks and seals.  Stock cam applications only, these are not performance springs.  Sold as a 15-pc set, 1 spring is missing!!!!