Chevrolet Equinox Parking Light Bulb Size

Additional Notes

• The front parking light specifications for the Chevrolet Equinox span model years 2005 through 2021, drawing from three distinct bulb types: the 168, the 7443NA, and the 7444NA, with the 7440NA appearing in the 2021 model year.
• The 7443NA and 7444NA are both T20 wedge bulbs operating at 12V with a dual-filament configuration rated at 21W and 5W respectively, making them functionally similar in output and physical format.
• Despite their shared T20 form factor and identical wattage ratings, the 7443NA and 7444NA are separate ANSI-designated part numbers, and substituting one for the other without confirming the specific year's requirement is not supported by the specifications.
• The 7440NA, used in the 2021 Chevrolet Equinox, is a single-filament T20 wedge bulb rated at 12V and 21W, distinguishing it from the dual-filament 7443NA and 7444NA types used in earlier model years.
• All three T20 variants, the 7440NA, 7443NA, and 7444NA, carry natural amber glass, which produces the amber color output directly through the glass envelope rather than relying on a colored lens housing.
• The 168 bulb is a T10 miniature wedge type rated at 12V and 4.9W, representing a significantly lower wattage output compared to the T20 bulbs used in later model years.
• The 168 bulb was the specified front parking light for the Equinox across the 2005-2008 model years, while the T20 family of bulbs became the standard from 2010 onward.
• All bulb types listed in these specifications conform to ANSI standards applicable to the United States and Canada markets.
• The years 2010-2016 and 2018-2020 predominantly use either the 7443NA or 7444NA, with the specific designation varying by individual model year rather than following a continuous pattern across that range.
• The T10 and T20 designations refer to the bulb's body width in units of one-eighth of an inch, meaning the T10 measures 10 eighths and the T20 measures 20 eighths, reflecting a physical size difference between the 168 and the three T20 variants.