Upgrade your aging Honda S2000 cooling system with a high-performance Koyo Radiator.! This radiator fits the 00-03 (AP1) with 2.0L and 04-09 (AP2) with 2.2L. This radiator is an ultra-efficient, two-row, high-density 36mm core with an increased coolant volume that keeps weight and space to a minimum. Precision TIG-welded, uniform brazed and triple pressure tested for quality. This kit allows the use of the stock radiator hoses for ease of install.