Plug and Play. No modification needed. Unlike the traditional LED bulbs, this bulb comes with heatsink and protective lens to prevent overheat problem. In order to get the right fitment, please do NOT solely rely on the compatibility list. Please double check by measuring the stock bulb length prior to purchase. . . *Please make sure there is enough room inside the housing before purchase as this bulb is wider than regular bulbs.. . 36mm x 15mm x 9mm