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-   -   Radiator Cap, S4 Cooling System (https://www.nopistons.com/2nd-gen-f-q-s-44/radiator-cap-s4-cooling-system-47652/)

raceneked 11-13-2008 11:48 AM


Originally Posted by j9fd3s' post='703563' date='Apr 22 2005, 07:28 PM
someone make this a faq, or remind me.



odd cooling system part numbers:



86-88 t stat: 8af1-15-171a-9u (the 9u stands for they went to kragen)

86-88 water pump: 8af1-15-100b, although they are swtiching to a shitty reman

86-88 o ring between filler cap and thermostat cover: n326-15-174

86-88 filler cap adaptor with overflow: n326-15-17ya

86-88 filler cap adaptor without overflow: n323-15-17y

aluminum filler cap adaptor without over flow: n3c1-15-175

86-88 upper radiator hose: n326-15-186b

86-88 lower radiator hose: n326-15-185b



89-91 thermostat housing: n350-15-172

86-91 thermostat : 8af6-15-171

89-91 upper radiator hose: n350-15-186

89-91 lower hose : n350-15-185





heater hose under oil filter: fb03-61-211 or fb01-61-211c, same hose 2 part numbers.

firewall to heater pipe: fb01-61-212b

heater pipe to radiator: fb01-61-213





Yes, I'm a FNG...



Can you use the S4 thermostat housing on S% iron? I prefer the fill cap at the top of the neck here, rather than just at the overflow tank...

gotta ask, getting ready to put in new motor and would like to swap if possible


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