KRC's LS -4AN water bypass hose kit replaces the factory clamp on hose system, making it more adaptable to race car water system plumbing. Includes -4 line and -4 tee fitting. Requires KRC 15200000 water bypass fittings. On KRC's CT525 kits using a factory water pump, this line will run from each cylinder head bypass fitting and then to the side of a surge tank. On KRC's CT525 kits with a Stewart Pro Series water pump, this line will run from each cylinder head bypass fitting to the front suction port on the water pump.