Ford Explorer Luggage Compartment Bulb Size

The Ford Explorer luggage compartment uses bulb sizes 578 and 211-2 for the interior lighting components. Available information covers the time range from 1991 through 2010 for the specified vehicle.

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
2002-2010	578
1991-2001	211-2

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Festoon bulb, 41mm length, end-cap contacts. 12V, 12W.	578
ANSI standard (US & Canada). Festoon bulb, 41mm length, SV8.5 base. 12V, 12W.	211-2

Other Locations

Additional Notes

The Ford Explorer uses two different bulb sizes for the luggage compartment across its model years: the 578 for 2002-2010 and the 211-2 for 1991-2001.
Both the 578 and 211-2 are ANSI-standardized festoon bulbs rated at 12V and 12W, sharing identical voltage and wattage output.
Both bulbs share a 41mm length, meaning the physical tube size is the same between the two types.
The key difference between the 578 and 211-2 lies in their contact design. The 578 uses end-cap contacts, while the 211-2 uses an SV8.5 base, making the two types non-interchangeable despite their otherwise similar specifications.
The SV8.5 base on the 211-2 refers to a bayonet-style festoon base with a specific 8.5mm socket width, which is a distinct mounting standard from the flat end-cap contacts of the 578.
Because the contact types differ, substituting a 578 for a 211-2 or vice versa in the Ford Explorer luggage compartment is not supported by these specifications, even though the bulbs are otherwise dimensionally close.