Stock Diameter Performance Dual with Damper Valve Spring & Retainer Kit 1.514. The item "Howards Cams 98636K-12 Valve Springs 1.514 Dual Spring With Damper" is in sale since Sunday, March 29, 2020. This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts\Engines & Components\Valves & Parts". The seller is "horsepowerclub" and is located in Fort Lauderdale, Florida. This item can be shipped worldwide.