Wider tubing for 400 HP and up applications. This is our most efficient cooling option!<br><br>This is a custom built to order item made in the USA Allow 4 weeks for completion. Item comes with 12 month warranty. Item is made for automatic transmission, but can be made manual at your request. Electric fan shroud and fan combos can be added and built to order at request. All customized items are made per the dimensions and specifications listed here. We do not guarantee ant fit based on catalog lookup. We expect consumer to check and compare to their needs prior to purchase:<br><br>Direct fit, bolt in replacement aluminum radiator for a 1954-1956 Buick Special<br> <br>Inlet: 1.625"<br> <br>Outlet:1.625"<br> <br>Direct fit radiator<br>16 Fins per inch<br>Filler neck is machined from a solid aluminum billet<br>No epoxy, fully furnace brazed<br>Fully TIG welded<br>100% MADE IN THE USA<br> <br>The high Efficiency core for this custom built, high performance radiator features 2 rows of 1.25" tubes. The tubes are space 3/8" apart, on center. With 3/8" centers we are able to put more rows of tubes, fins, and coolant volume in the core as well as create more surface area for air to travel over' allowing for greater heat dissipation.<br> <br>*NOTE*- The automatic transmission cooler option in this unit has 1/4" NPT connections. Stock unit's transmission lines maybe 3/8" NPT in some cases and will require adapters