57mm (2 1/4 inch) Pro Design Aluminum Hose Joiner COOLELB45 It is designed specifically for

It is designed specifically for connecting a 3" (76mm) OD metal intake pipe to a 2 3/4" (70mm) OD pipe

50 and 3613-4

These 90 degree reducer elbow hoses have a 63mm ID at one end and a 51mm ID at the other end to connect a 2 1/2" OD tube to a 2" OD tube

and you're done

The 5mm wall thickness results in a 4 1/8" (105mm) OD

57mm (2 1/4 inch) Pro Design Aluminum Hose Joiner COOLELB45 It is designed specifically forThese anodized aluminum joiner nipples are designed for splicing together our 57mm (2 1 4") ID silicone coolant and turbo intake hose. Use them to connect any two 57mm ID hoses: an elbow to a straight section, a straight section to a reducer, or two elbows. To install, simply slip one hose over one end of the nipple until it just touches the centering bead. Slip the second hose over the other end until the two hoses meet in the middle. Add hose clamps