5-Port Distribution Block with Stainless Steel Hard Lines

Its primary function is to eliminate trapped air and steam pockets within the engine's cooling system, thereby preventing hot spots and reducing the risk of overheating. This upgrade also offers enhanced flexibility for accommodating aftermarket intake manifolds. This particular kit, the SUM-220959X, is distinguished by its inclusion of stainless steel hard lines and a 5-port distribution block, differentiating it from other kits in the Pro LS series. It features black anodized billet aluminum fittings, a steam port adapter, O-rings, and stainless steel bolts. The kit comes with -3AN or -4AN hoses and hose ends, facilitating an installation that is both easier and more aesthetically pleasing than stock lines. The overall design aims for a cleaner look and improved water flow within the cooling system. Key components of the SUM-220959X kit include a main body 5-port distribution block and various fittings, such as 90-degree elbows that transition from 1/16 npt to -3AN connections. The hard lines are constructed from stainless steel, and the steam port adapters are black anodized aluminum.