Component Name: 090000 FUEL SYSTEM, OTHER
NHTSA #: 093603
SUMMARY: FUEL SMELL IN COLD WEATHER. *SCC
First off smelling raw fuel on 02-04 WRX's during the cold weather is a known issue. There was even a TSB issued for it in 2003. Whether Subaru pays or you pay is a different story. Some people have gotten the item warranted and some haven't it seems to be on a case by case basis. As far as I can find, the parts required are:
(Subaru part numbers)
2 each #14075AA161 "Gasket Intake Collector" @$18.32 = $36.64
2 each #14035AA421 "Gasket Intake Manifold" @$10.69 = $21.38
They have to remove both the upper and lower manifolds.
The fuel line #807707140 -- no mention of the size. $25.86
Labor seems to run around $300.
Make sure to double check with the dealer for the parts and the TSB.
Apparently persistence pays off with SOA so keep bugging them to cover it.
I will be new threads on the subject into this one.