This unit mounts to the bumper side of the core support.<br><br>1955-1956 Chevrolet Tr-Five Aluminum Performance Radiator. Straight 6 position cars for mount In Front (grille side) of radiator support. Direct fit for 55-56 cars. 57 owners must use 227715 for proper hood clearance.<br><br>**If you have a V8 support and are using the conversion brackets to move the radiator to the front position, you still use 227709.**<br><br>These COLD-CASE radiators are Tig welded 100 percent aluminum and absolutely beautiful.<br><br>Don't buy a 3 or 4 row aluminum radiator! It doesn't cool as good as these oversize 2 row models.<br>These radiators are original appearing and have the correct stamping. Once painted, you'd be hard pressed to find a difference over an original versus a COLD-CASE.<br><br>100 percent TIG welded<br>All Aluminum<br>Polished OE style tanks<br>16 fins per inch<br>Corrugated fins that give more surface area and more thermal transfer<br>Pressure tested<br>For manual/auto trans<br>Direct fitment for 55-56 Chevy (Straight 6 position mount)<br>Old Part Number: RPE563<br>Radiator Specs<br><br>Core Height 17 inch<br>Core Width 21.5 inch<br>Overall Height 23.5 To Cap<br>Overall Width 23.5 inch<br>Overall Thickness 3 inch<br>Tubes (2) 1.25 inch Tubes<br>Upper Hose 1.50 inch<br>Lower Hose 1.75 inch<br><br>(<a href="https://www.coldcaseradiators.com/warranty" target="_blank">Register your warranty direct with manufacturer online</a>) <br>Overflow Tank (<a href="http://www.radiatorexpress.com/category.asp?cat_id=R023" target="_blank">See Category</a>)<br>