Sinister Diesel 03-07 Ford Powerstroke 6.0L Hose & Clamp KitThese heavy duty intake boots are Four Ply Silicone and won't crack or split like the factory rubber boots. Features: Heavy Duty High Temperature Four Ply Silicone Boots, Every boot hose that Sinister manufactures is designed to exceed factory specifications, Won't split or crack like the factory rubber boots can, Increased airflow, quicker turbo spool, and lower EGTs, Kit Includes (4) Four Ply Silicone boots and (8) Stainless Steel Spring Clamp, 300