Stainless Steel Complete Coolant Crossover Steam Vent Kit AN4 For LS1 LS2 LS3 LS
$38.99
For LS family of engines LS1 LS2 LS6 LM7. (Will not fit Fast Intakes). Not having 4 AN coolant crossover will allow steam pockets to build up in the highest point of your cylinder head and create hot pockets.