Polaris Frontier Touring Brake Bulb Size

Additional Notes

• The Polaris Frontier Touring uses the 3157 bulb for the brake light position across the 2003-2005 model years.
• The 3157 is an ANSI-standardized bulb type, meaning its specifications are governed by a formal industry standard recognized in the United States and Canada.
• This bulb operates on a dual-filament design within a T25 wedge base, where one filament draws 27W for the brake/stop function and a second filament draws 7W for the lower-intensity running light function.
• The wedge base format means the bulb is held in its socket by the tension of the base itself rather than by a bayonet or screw mechanism, which is a common trait of T25 bulbs in this application.
• The 12V operating voltage of the 3157 is consistent with the standard electrical system voltage found in most production road vehicles and powersports equipment of this era.
• Because the 3157 is a dual-filament bulb, substituting it with a single-filament equivalent would result in the loss of either the brake or the running light function, making filament count a critical factor in any replacement selection.