Rubber is out, and silicone is in for your 2012+ Grand Cherokee SRT8 6. 4L V8 radiator hoses! A leaking radiator hose can lead to serious engine damage if not quickly identified. Upgrade your cooling system with the Mishimoto 2012+ Grand Cherokee SRT8 6. 4L V8 Silicone Radiator Hose Kit for the perfect combination of performance and durability. Mishimoto radiator hoses are manufactured with high-grade silicone and four layers of heat-resistant embedded fibers to provide increased pressure and temperature tolerance. The Mishimoto radiator hose kit is ideal for use on both stock and modified trucks for any environment or terrain. The Mishimoto 2012+ Grand Cherokee SRT8 6. 4L V8 Silicone Radiator Hose Kit, like all our performance parts, includes the Mishimoto Lifetime .