Impressive Engine Ingenuity. If you want the highest in engine ingenuity, the Comp Cams Stage 3 HRT 224/234 Hydraulic Roller Camshaft Set may give your speed demon the boost it needs. Its sophisticated hydraulic roller technology assures smooth and reliable functioning even in harsh situations. The low-maintenance design reduces friction and wear, extending the life of your engine and offering peace of mind over time. Carefully Crafted Aluminum. The Comp Cams Stage 3 HRT 224/234 Hydraulic Roller Camshaft Kit is constructed of finely milled billet aluminum steel that has been carefully anodized and treated to ensure rust-free operation and long-term durability.May Require Tuning. This product may require professional tuning for maximum efficiency.Installation. This product is difficult to install and should take about 1 hour.Warranty. There is a 12-month limited warranty on this product.Application. The Comp Cams Stage 3 HRT 224/234 Hydraulic Roller Camshaft Kit fits all 2006-2008 5.7L HEMI Dodge Charger models.