the wrx have some bulbs that can only be brought thru ur dealer.. like the conner bulbs of a 02 wrx..i looked every where but the only place i found that was at the dealer
yea advance has them.....not sure what size though check your owners manual or take one out and take it inside the store.
The bulb should have the part number/bulb size printed on the bult it self. I bought mine from advanced auto parts
Since it was OEM, i wasn't sure what p/n would be on it, but its a generic 7740 or something. OEM was $15 for one... O_O, got a sylvania 2 pack for $5. The stupid clip was tricky but Bob showed me the trick. Woot. saved $10 for gas.