Blue Silicone 350F CAC Reducer Hose, 3.50 x 2.50" ID, 6" L 102.76 These 45 degree reducer elbow

These 45 degree reducer elbow hoses have a 35mm ID at one end and a 25mm ID at the other end to connect a 1 3/8" OD tube to a 1" OD tube

5mm wall thickness (100mm / 3 15/16" and 74mm / 2 15/16" OD) and a working pressure rating over 12 psi (64 psi burst pressure)

It is designed specifically for connecting 3 3/8" (86mm) OD metal intake pipes

5mm wall thickness (60mm / 2 3/8" and 47mm / 1 7/8" OD) and a working pressure rating over 27 psi (135 psi burst pressure)

The 4-ply reinforcement results in a 5mm wall thickness (73mm / 2 7/8" and 55mm / 2 1/8" OD) and a working pressure rating over 18 psi (92 psi burst pressure)

Blue Silicone 350F CAC Reducer Hose, 3.50 x 2.50" ID, 6" L 102.76 These 45 degree reducer elbowCharge Air Cooler (CAC) hose is specifically designed to handle the higher temperatures and pressures in high performance turbo and supercharged applications. Four layers of polyester reinforcement and 3 reinforcing rings allow operating pressures of 42 psi (170 psi burst pressure) and temperatures up to 350 F (180 C). Note that this temperature rating is best suited to the "cold" (post intercooler) side of the system. This hose is color coded Blue