Dodge Avenger Map Light Bulb Size

Additional Notes

• The Dodge Avenger map light uses two distinct bulb types across its production years: the 12961 for 2008-2014 models and the DE3175 for 1995-2000 models.
• The 12961 is a Philips part number designating a T10 miniature wedge bulb. It operates at 12V with a 5W output and uses a W2.1x9.5d base, which is a push-in wedge-style fitting that requires no separate socket locking mechanism.
• The DE3175 is an ANSI-standardized festoon bulb, meaning it is recognized under a shared North American specification used across the United States and Canada. It operates at 12V and measures 31mm in length.
• Festoon bulbs such as the DE3175 make contact through metal end caps at both tips of the bulb body, a design fundamentally different from the wedge base of the 12961. These two bulb types are not interchangeable.
• The W2.1x9.5d base designation on the 12961 describes a specific wedge base standard: 2.1mm wire contact width and a 9.5mm insertion depth. This base is common across many T10 wedge applications in automotive interior lighting.
• Because the 12961 and DE3175 differ in both base type and physical form, a map light housing designed for one will not accept the other without modification.
• The 12961 carries a manufacturer-specific part number from Philips, while the DE3175 follows an industry-wide ANSI designation, meaning the DE3175 specification is sourced from multiple manufacturers under the same standard.