7" OD X 4" Long Rubber Elbow 45 Degree This 1-3/4 inch to 1-1/2

This 1-3/4 inch to 1-1/2 inch reducing silicone coupler is 3 inches long

Recommended clamps are 94100-0450 on the small end and 94100-0600 on the big end

This reducing insert adapts a 5" ID intake hose to a 4-1/2" OD tube

It is recommended in any air-to-air application or any application using silicone hoses

The grommet around the 4-1/4" hole you drill in the fender

7" OD X 4" Long Rubber Elbow 45 Degree This 1-3/4 inch to 1-1/2Standard aluminum intake tubing. 6061T6 alloy . 125 wall thickness. 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, but no dents or major defects. Made in USA.