2.5" OD to 2.25" ID google_custom_1_silicone and then the 2-1/4" intake

and then the 2-1/4" intake tube fits in the hole

5" OD and 4" OD intake tubes

Mill finish (as it arrives at our location from the mill after traveling on a truck and being handled several times) – may have minor defects and small scratches

This standard 8 inch hump hose is used to connect two 8" OD intake tubes

You install it in the end of the 5" rubber elbow or hump hose

2.5" OD to 2.25" ID google_custom_1_silicone and then the 2-1/4" intakeThis reducing insert adapts a 2 1 2" ID intake hose to a 2 1 4" OD tube. You install it in the end of the 2 1 2" rubber elbow or hump hose, and then the 2 1 4" intake tube fits in the hole. Made in USA. 25R225