4" OD to 3.75" ID

4" OD to 3.75" IDThis reducing insert adapts a 4" ID intake hose to a 3 3 4" OD tube. You install it in the end of the 4" rubber elbow or hump hose, and then the 3 3 4" intake tube fits in the hole. Made in USA. 40R375

and then the 3-1/4" intake tube fits in the hole

This 45 degree silicone elbow is 2-3/4" ID it handles 350 F continuous and is perfect for intercooler/aftercooler applications

and then the 3" intake tube fits in the hole

This 45 degree silicone elbow is 4-1/2" ID

Mill finish (as it arrives at our location from the mill) – may have minor defects and small scratches

This 2 inch 90-degree intake hose can be used when you have two 2" OD tubes and you need to make a 90-degree bend

This reducing insert adapts a 6" ID intake hose to a 5" OD tube

Because it flares out

This 90 degree silicone elbow is 3-1/2" ID and can be used anyplace you need a 90-degree bend

This 5" 90-degree intake hose can be used any place you have two 5" OD tubes and you need to make a 90-degree bend

This 2-1/2" 45-degree black rubber intake hose can be used anywhere you need to join two 2

Recommended clamps are the 9424H