Ford Heater Hose Coolant Restrictor E7VH-18D406-AA Installation Diagram

This document is a technical illustration (Figure 1, drawing number TB-3203-A) showing the correct installation of a heater coolant restrictor in the inlet heater hose. The diagram depicts a bent heater hose section attached to the engine side, with a restrictor (Ford part number E7VH-18D406-AA) inserted inside the hose. Callouts specify that the restrictor must be oriented as shown, with its tapered/cone end positioned relative to the coolant flow direction, which is indicated by a large arrow flowing away from the engine through the hose. A worm type hose clamp (part number 97357-S8 or equivalent) must be installed as shown, positioned over the restrictor location on the hose. A dimension of 1.25 inches is given, measured from the engine-side end of the hose to the restrictor position. The lower callout identifies the hose as the inlet heater hose. A reader can learn the required restrictor part number, the proper clamp type and part number, the restrictor's orientation relative to coolant flow, and the placement distance (1.25") from the hose end. The document itself does not state a vehicle year, model, or engine; it was uploaded to a 1993 Ford Mustang gallery as part of a heater restrictor location set.