For the 2017 Subaru Forester, headlight bulb fitment depends on the factory headlight type. Models with halogen headlights use an H11 for the low beam and a 9005 for the high beam. Models with LED headlights use LED assemblies for both the low and high beams.
Daytime running light fitment follows the same distinction: halogen-headlight models use 9005, while LED-headlight models use LED lighting. Fog-light listings include both H11 LED and H16 LED, so confirm the existing fog-light setup before ordering.
Other notable fitments include 7444NA front turn signals, 7440A rear turn signals, and 921 reverse lights. The brake lights and center stop light are listed as LED. License plate, side-marker, tail, interior, and trunk applications may use 2825 or 98, while the dome and map lights use DE3175.