Finish the custom intake or repair the existing one on your 2018-2021 Ford 3.0L Powerstroke with the Intake Couplers & Elbows available. These couplers come in various sizes ranging from 3.5" all the way up to 6" diameter and are manufactured out of rubber, silicone, or plastic. Find a large selection of 90-degree, hump, straight, and reducing couplings. Find superior quality manufacturers such as Grand Rock, AFE, Fleece Performance, and Vibrant at XDP.