HPS 2-3/4" (70mm), 6" Long High Temp 4-ply Reinforced Silicone Charge Air Cooler CAC Hose Cold Side meet and exceed SAEJ20 industry standards, designed and engineered to provide a connection between engine mounted charge air system components. Ideal for handling slight misalignments and isolating vibration between hose ends; great for marine and industrial use, custom turbo or intercooler piping fabrication. Technical Specification: Product Type: Silicone Charge Air Cooler CAC Hose Cold Side. Temperature Range:- 65 deg. F to + 350 deg. F (177 deg. C). Reinforced Layer: 4-ply. Hose Inside Diameter: 2.75" (70mm). Hose Outside Diameter: 3-1/8" (80mm). Hose Length: 6". Number of Rings: 3. Wall Thickness: 4.5mm (+/- 0.5mm). UV and ozone resistant. Remark: Silicone hose is NOT compatible with fuel or oil.