With original shape mini header tank, now with drain plug in lower tank which doubles up to also accept the screw in type sensor for later cars. It has about 20 fins/ gills per inch with 2 tubes in the core and is the better cooling V shape finsEspecially for more powerful and hotter running engines. Developed using the latest technology and design for increasing air flow, utilizing just two rows of very large tubes and V shaped gills.(MWAC-ARA4442).