Harley-Davidson FLHTCU Electra Glide Ultra Classic Fog Light Bulb Size

Harley-Davidson FLHTCU Electra Glide Ultra Classic front fog light bulbs use an 881 size bulb for optimal illumination. The replacement chart covers 2012 to 2013 model years with corresponding bulb size specifications.

The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.

Front Fog Light

Years	Bulb Size
2012-2013	881

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Single-filament halogen bulb with PGJ13 base. 12V, 27W.	881

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Additional Notes

The 881 is the fog light bulb type used across both documented model years of the Harley-Davidson FLHTCU Electra Glide Ultra Classic, covering 2012-2013.
The 881 bulb follows the ANSI standard, which is the American National Standards Institute classification system used in the United States and Canada to define bulb performance and dimensional requirements.
As a single-filament halogen bulb, the 881 operates on one tungsten filament enclosed in a halogen gas environment, which extends filament life and maintains luminous output over time compared to standard incandescent designs.
The 881 uses a PGJ13 base, a prefocus-type connector that positions the filament at a fixed point relative to the base, which is relevant for fog light applications where beam pattern consistency matters.
The bulb operates at 12 volts and draws 27 watts, placing it in the lower wattage range typical of auxiliary fog lighting rather than primary headlight applications.
The 881 shares its PGJ13 base with several related bulb types in the 880 series, though wattage and voltage ratings differ across that family, making direct substitution dependent on matching the electrical specifications rather than the base type alone.