The Renegade Motorsports Delrin Aluminum Hybrid Oil Cap is now Available! This Cap allows you to maintain the styling of our signature billet aluminum replacement caps without burning your fingers! Now you can have your cake and eat it too! The Cap consists of an Aluminum top piece that will perfectly match the rest of our caps, and a black Delrin threaded insert that limits heat conduction from the block. Both parts are fully CNC machined to exacting tolerances to provide you with perfect fit and finish! Take a look at our Thermal Analysis Below!!!