JDC Titanium Intake Manifold Stud Kit | Mitsubishi Evo 4-9JDC Titanium Intake Manifold Stud Kit (Evo 4 9) Using the factory intake manifold bolts and studs with an aftermarket intake can result in stripped or broken bolts and inadequate sealing force, which will result in a boost leak. This kit will allow you to properly seal the intake manifold to the cylinder head and will never rust or corrode! The JDC titanium stud kit is made from a Ti6Al 4V (Grade 5) titanium and incorporates a hex key tip that allows