LS Steam Tube Kit w/ Stainless Steel Hard Line Tubing and Black Anodized Fittings & Distribution Block. Four-Corner Style Allows Coolant Flow From the Front & Back of the Cylinder Heads. Includes 2 Set of Pivoting Steam Vent Adapters - Part # LS9807ERL; Earl's hard line steam tube kit is designed to eliminate trapped air and steam from your LS engine to prevent hot spots & overheating. Easy bolt-on installation using the included pivoting steam vent adapters (includes 2 sets of LS9807ERL). Made from attractive stainless steel tubing & black anodized components.