2015 Subaru Outback Fog Light Bulb Front(with eyesight package (steering responsive fog)) H11 LED KIT RELAYHARNESS H11b HID Replacement Bulbs are

H11b HID Replacement Bulbs are compatible with 35W and 55 W ballast

If you want to check online

The 55 LED bulb is one of the most common used fitment

The LUMENIS 6414BC LED Kit has everything you need to make the switch from Halogens or HID to the Newer and best lighting option of LED

2015 Subaru Outback Fog Light Bulb Front(with eyesight package (steering responsive fog)) H11 LED KIT RELAYHARNESS H11b HID Replacement Bulbs areThe LUMENIS H11 LED HEADLIGHT CONVERSION KIT has everything you need to make the switch from Halogens or HID to the Newer and best lighting option of LED. LEDs compared to HID or Halogens are the most reliable option with a ONE Piece design this is truly the best Plug n Play option. This LED kit has an instant on a function no need for a warm up time like HIDs. The Lumenis LED kit has a built in fan for cooling and a built in controller.