Blue Silicone 350F CAC Hose, 4.50" ID, 6" L SHC57-RED-04 These 180 degree elbows have

These 180 degree elbows have a 1 3/8" ID with a smooth

Fits all clamp sizes

The 83mm ID at one end and 57mm ID at the other end let you connect a 3 1/4" OD tube to a 2 1/4" OD tube

black only

Blue Silicone 350F CAC Hose, 4.50" ID, 6" L SHC57-RED-04 These 180 degree elbows haveCharge 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 35 psi (142 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