This is an obsolete new (NOS) Ford cooling system heater flow restrictor/control. This is the original equipment inlet heater hose flow restrictor included as standard factory equipment in all 1987-1993 SSP police Mustangs. 

It is made of non-corrosive metal with the soft orifice to restrict heater circuit coolant flow without clogging or cavitation. Virtually eliminates heater core blow-out. Ford part number: F2ZV-18D358-AA. 

This fits easily in any 1987-1993 Mustang LX 5.0, GT or Cobra’s inlet heater hose. You only need one. Don’t be fooled by the cheap plastic copies that lack in performance.

An absolute MUST HAVE. Questions? Let us know.

Remember...  Reproduction parts have zero collector value.

FREE domestic shipping. We participate in eBay's Global Shipping Program.