It is the size of the tubes/rows that provide the best cooling. The highest cooling efficiency is with 2 rows 1 inch to 1&1/8 inch wide. Do your research and you will find any major name brand radiator shop will be building them with 2-large rows. Usually at a premium price.
Remember Just because they can bend and weld aluminum into the shape of a radiator does not mean they know how to make it cool properly. All products are returnable in good condition. We will work with you to see what is wrong and correct the problem. To insure the quality of our service and our products, we need to know why you need to return an item. Most times we can just send out a replacement piece.
If for any reason you are returning a product because it is defective or not as described you would not be subject to any charges. Please be sure to read the entire listing carefully and check the year, make and model of your vehicle before ordering. The item "1955 1956 1957 1958 1959 Chevrolet GMC Pickup Truck Aluminum Radiator Fan Shroud" is in sale since Tuesday, August 4, 2015. This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts & Accessories\Engine Cooling Components\Radiators". The seller is "autocity1958" and is located in Isanti, Minnesota.This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Taiwan, South africa, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, Mexico, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi arabia, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Brazil, Chile, Colombia, Costa rica, Panama, Antigua and barbuda, Aruba, Belize, Dominica, Grenada, Saint kitts and nevis, Saint lucia, Montserrat, Turks and caicos islands, Barbados, Bangladesh, Bermuda, Brunei darussalam, Bolivia, Ecuador, Egypt, French guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Cayman islands, Liechtenstein, Sri lanka, Luxembourg, Monaco, Macao, Martinique, Maldives, Nicaragua, Oman, Peru, Pakistan, Paraguay, Reunion, Viet nam, Uruguay.