Diode Dynamics 28mm SMF2 LED Bulb - Blue (Pair) IAGAOS15 Most drivers start with the

Most drivers start with the inner position and move to the outer if more rear stiffness is needed

Fits the 2015-2021 Subaru WRX STI with EJ257 on the VA chassis

This kit will allow you to upgrade to a larger variety of fuel injector sizes while having a larger internal bore size needed to support all necessary engine power requirements

Features Direct replacement for factory 74 194 BA9S or festoon-size incandescent bulb Increased output with LED Appearance Plug and play simple installation Available in multiple color options Overview Upgrade

Diode Dynamics 28mm SMF2 LED Bulb - Blue (Pair) IAGAOS15 Most drivers start with theFeatures Direct replacement for factory 28mm festoon bulb Adds more modern LED appearance Plug and play simple installation Overview Design. The 28mm SMF2 LED bulb is a direct replacement for any 28mm size bulb commonly found in vanity mirror lights in many vehicles. Populated with two 5050 size SMDs the SMF2 upgrades the factory yellowish incandescent bulb to a more modern LED appearance while adding far more total light output than the factory bulb.