4"OD to 3.25" ID

4"OD to 3.25" IDThis reducing insert adapts a 4" ID intake hose to a 3 1 4" OD tube (or throttle body). You install it in the end of the 4" rubber elbow or hump hose, and then the 3 1 4" intake tube fits in the hole. Actual ID is 3. 23", so it will be a snug fit and may require a little additional force to install. Made in USA. 40R323

This reducing 68-degree intake elbow can be used any place where you are connecting a 7" OD tube and a 6" OD tube

Special tight-weave aramid reinforcement handles more pressure and can last longer than other brands

Special tight-weave aramid reinforcement handles more pressure and lasts longer than other brands

and then the 6" intake tube fits in the hole

and then the 6-1/4" tube or tube fits into the insert

Recommended clamps are CT400

Recommended clamps are 94100-0350 on the small end and 94100-0450 on the big end

This reducing hump hose connects 3-1/2" OD and 3" OD intake tubes together

This 45 degree silicone elbow is 3" ID it handles 500 F continuous and is perfect for intercooler/aftercooler applications

This charge air cooler hose with rings and is ideal for aftercooler systems

5" ID intake hose to a 5" OD tube

and then the 1-1/2" intake tube fits inside the insert