Item 7026196 has must read information.
: This consult factory only applies if ordering this replacement bulb for strobe lamp assembly JLG p/n 2920178. Due to changes made by the vendor the length of the replacement bulb fitted to your machines current strobe lamp assembly must be verified before ordering. If the bulb removed from your strobe lamp assembly measures approximately 1 3/4" in length order p/n 7026196. If the bulb removed from your strobe lamp assembly measures approximately 2 1/4" in length you must order p/n 2920178.