Dodge Caliber Dome Light Bulb Size

The Dodge Caliber dome light requires a bulb size of 578 for the interior lighting system. Data for the specified vehicle covers the range of 2007 to 2012.

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

Bulb Size by Year Range

Years	Bulb Size
2007-2012	578

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Festoon bulb, 41mm length, end-cap contacts. 12V, 12W.	578

Other Locations

Additional Notes

The Dodge Caliber uses the 578 bulb for the dome light across all listed model years, spanning 2007-2012.
The 578 is a festoon-style bulb, meaning it is cylindrical in shape and makes electrical contact through metal caps at each end rather than through a base socket.
The 578 bulb has a length of 41mm, which is the critical fitment factor for festoon bulbs, as the housing retains the bulb by tension between its two end contacts.
The 578 operates at 12 volts and 12 watts, which is consistent with standard automotive interior lighting powered directly from a vehicle's 12V electrical system.
The 578 is classified under the ANSI standard, meaning its specifications are standardized for the United States and Canada markets.
Because festoon bulbs are retained by length rather than by a keyed base, substituting a festoon bulb of a different length risks poor contact or an unsecured fit in the dome light housing.