1986F150Six Posted July 20, 2018 Share Posted July 20, 2018 I've never seen these, before. The hoses seem to be a smaller diameter at the ends which would attach to the heater core? https://www.ebay.com/itm/NEW-OEM-Ford-E6TZ-18472-A-HVAC-Heater-Water-Hose-1986-F-150-F-250-F-350-4-9L/183178809930?hash=item2aa64ed24a:g:HtYAAOSwYtla0jJ6 Link to comment Share on other sites More sharing options...
Gary Lewis Posted July 20, 2018 Share Posted July 20, 2018 I'm missing the heater hose part numbers on the site, but here's the entry for that. Looks like the advert is right. Link to comment Share on other sites More sharing options...
1986F150Six Posted July 20, 2018 Author Share Posted July 20, 2018 I'm missing the heater hose part numbers on the site, but here's the entry for that. Looks like the advert is right. "Reducer type"... that would explain the smaller diameter at the hose ends! I wonder what is the advantage? Link to comment Share on other sites More sharing options...
grumpin Posted July 20, 2018 Share Posted July 20, 2018 "Reducer type"... that would explain the smaller diameter at the hose ends! I wonder what is the advantage? Interesting. I'm curious as to why it would be reduced also. Link to comment Share on other sites More sharing options...
Gary Lewis Posted July 20, 2018 Share Posted July 20, 2018 Interesting. I'm curious as to why it would be reduced also. There's a one-year discrepancy with this, but apparently the 1985/86 and on 4.9L engines had a 3/4" heater hose connection but the heater core was still 5/8". David - Yours isn't that way? Link to comment Share on other sites More sharing options...
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