M4 LED Passing Lamp Module - 4.5"The DENALI M4 LED Passing Lamp Module is a direct plug and play replacement to your original 4 1 2 inch passing lamp sealed beams. It features a super bright main beam and a halo day time running light. Drop this passing lamp module into your existing passing lamp housing to create a piercing beam of white light that is the perfect combination of distance and width. The unique styling and black chrome finish will give your bike that modern custom look