Mishimoto Mishimoto 01-07 Subaru WRX and STi Manual Aluminum Radiator - MMRAD-WRX-01 $435.96 $323.95 Whether you daily drive a stock STI or rallycross a modified WRX, an efficient cooling system is key to extending the life of your flat-four. The plastic end tanks of the stock radiator are especially prone to cracking from years of constant variation in... Add to Cart