The Jeep Wrangler side marker utilizes a 168 bulb size for the lighting assembly. Data for the specific bulb requirements covers the period from 2017 through 2017.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The front side marker position on the Jeep Wrangler uses two bulb types across its model years: the 168 and the 194. Both are T10 miniature wedge bulbs operating at 12V, though they differ in wattage. The 168 draws 4.9W while the 194 draws 3.78W, making them electrically distinct despite sharing the same T10 wedge form factor.
Because the 168 and 194 share the T10 wedge base, physical fitment between the two is possible, but their wattage ratings differ. Substituting one for the other in the front side marker position may affect circuit load and light output.
The front side marker on the Jeep Wrangler used the 194 bulb from 1987-1995, then transitioned to the 168 for 1997-1999, reverted to the 194 for 2000-2002, returned to the 168 for 2005-2006, switched back to the 194 for 2007-2009, and settled on the 168 for 2010-2018.
The rear side marker position on the Jeep Wrangler uses the 3157 for 2007-2018. This bulb is a dual-filament T25 wedge type rated at 12V with a 27W high filament and a 7W low filament, a significantly higher wattage profile than either front side marker bulb.
The 3157 is a dual-filament bulb, meaning it supports two independent brightness levels within a single housing. Its use in the rear side marker position on the Wrangler reflects a design that may integrate both marker and signaling functions through the same lamp.
The rear side marker on the Jeep Wrangler used the 168 bulb for 1997-1998, which is a single-filament T10 wedge rated at 4.9W. This contrasts sharply with the 3157 used in later model years, and the two bulbs are not interchangeable due to differences in base type, filament count, and wattage.
The 3157 rear side marker bulb is an ANSI-standardized part, as are the 168 and 194, meaning all three types conform to established US and Canadian specifications for base configuration, voltage, and wattage.