Shearer Fab's Intercooler for Holley's Hi-Ron and Lo-Ram Intake Manifold was developed at the request of racers in need of a more efficient intercooler for their race program. We fit the largest 4.5" thick intercooler core we could find in the intake. With sufficient water flow you can typically expect this intercooler to remain efficient to 15-1700hp. -Billet Aluminum Flanges. -5" Overall height. -16ORB Water Connections. -O-Ring included to properly seal the lid. -Zinc plated bolts. -Made in the USA! Note!! If you are using this intercooler with a HiRam manifold with the OLD bolt pattern you will need to order our Retrofit Parts Kit<click here>!!