3.25 to 3 inch reducer boot consists of 4-ply Aramid reinforced silicone hoses that are specially made for Riffraff Diesel to withstand extreme temperatures to approximately 550 degrees F (vs. standard couplers that are good to 350 degrees F) and tested up to 180 psi working pressure. All 7.3 intercooler pipes are 3 inch so if your intercooler measures 3.25” then this will work. Obviously it can be used for a multitude of other applications as well. Thanks for looking
