Blue Silicone 350F CAC Hose, 3.50" ID, 6" L Inch_3/4 These 45 degree elbows have

These 45 degree elbows have a 1 3/4" ID with a smooth

These one foot (12" / 33cm) long straight hoses have a 1 3/8" (35mm) ID with a smooth

Leg spacing is 3 3/4" (95mm) center-to-center (1 7/8" centerline bend radius)

This size fits hoses measuring 3 1/4" to 3 1/2" 83mm to 89mm) OD -- be sure to measure your hose OD after installation

It is designed specifically for connecting 3 1/4" (83mm) OD metal intake pipes

Blue Silicone 350F CAC Hose, 3.50" ID, 6" L Inch_3/4 These 45 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 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