Silicone CAC Hose HOT,High Temp 4-ply Reinforced,2-3/4" - 3-1/2" ID,6" Long HPS 2-3/4" - 3-1/2" (70mm - 89mm), 6" Long High Temp 4-ply Aramid Reinforced Silicone Charge Air Cooler CAC Hose Coupler Hot Side Bellow meet and exceed SAEJ20 industry standards, designed and engineered to provide a connection between engine mounted charge air system components.