The XDP Performance Valve Springs and Retainer Kit XD386 are a perfect upgrade for your modified 2001-2016 GM 6.6L Duramax. Camshaft upgrades and other modifications that increase boost require more valve control.The XDP Performance Valve Spring feature a conical design for better valve control than a standard straight spring. The conical design also allows for smaller and lighter spring retainers. Each spring undergoes a stress relief process and is computer load mapped, to ensure quality and long-term reliability.Each spring is matched within 1 lb of seat pressure to ensure consistency. Sold as a complete set with valve springs, retainers, and locks. Each kit is backed by XDP's 1-year unlimited mileage warranty.
Features:125 Lb. Seat PressureConical Spring DesignPerformance Valve Spring KitEssential For Elevated Boost LevelsComplete Set (Springs, Locks and Retainers)Specifications:Installed Height: 1.610 inchInstalled Pressure: 125lbs210lbs at 1.110 inchCoil Bind: 1.050 inch
Engine Valve Spring
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Package Information
Package Length:7.5 INPackage Width:8.5 INPackage Height:3 INWeight:5 LBOrderable Status:YesQuantity:1Package UOM:Smallest Pack (Consumer Level)Weight Variance:0.000000000Stacking Factor:0Inner Quantity:0
Extended Information
Country of Origin (Primary):USAWarranty Special:1 Year / Unlimited Mileage