16 HEAT TREATED CHROMOLY VALVE SPRING RETAINERS. 16 HEAT TREATED CHROMOLY VALVE SEATS. The item "GM LS Dual Valve Spring Upgrade Kit. 600.700 LIFT LQ 5.3L LY6 FREE SHIPPPING" is in sale since Thursday, November 8, 2018.This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts\Engines & Components\Timing Components". The seller is "alper-motorsports" and is located in Las Vegas, Nevada. This item can be shipped to United States, Canada, United Kingdom, Australia, Mexico, Germany, Japan, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Greece, Portugal, Cyprus, Slovenia, Sweden, South Korea, Indonesia, Taiwan, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Austria, Bahamas, Israel, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi arabia, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Brazil, Chile, Costa rica, Dominican republic, Panama, Trinidad and tobago, Guatemala, El salvador, Honduras, Jamaica, Aruba, Belize, Dominica, Grenada, Saint kitts and nevis, Turks and caicos islands, Bangladesh, Brunei darussalam, Bolivia, Ecuador, Egypt, French guiana, Guadeloupe, Iceland, Jordan, Cambodia, Liechtenstein, Luxembourg, Macao, Martinique, Nicaragua, Peru, Pakistan, Paraguay, Viet nam, Uruguay, China, Guernsey, Gibraltar, Jersey, Monaco, Russian federation.