4 Hose kit includes.
(RF1-BLUE) = Water manifold to heater matrix.
(RF2-BLUE) = Bottom rad hose to heater matrix.
(RF3-BLUE) = Radiator to water manifold.
(RF7-BLUE) = Bottom rad hose to water pump.
Fits Black Top engine with Retroford copper rad (Z010).
Will fit other radiators. See Attached Photo.