Chevrolet HHR License Plate Bulb Size

Additional Notes

• The 168 bulb is the license plate bulb size for the Chevrolet HHR across the 2006-2011 model years represented in these specifications.
• The 168 bulb follows the ANSI standard recognized in both the United States and Canada, meaning it conforms to a defined set of electrical and physical requirements shared across North American markets.
• This bulb operates at 12 volts and draws 4.9 watts, placing it in the low-wattage range typical of exterior lighting applications that run continuously when the headlights are active.
• The 168 uses a T10 miniature wedge base, which is a pinless design that seats by friction fit into a wedge-style socket rather than by a bayonet or screw mechanism.
• The T10 designation refers to the bulb's body width expressed in eighths of an inch, making the body approximately 10/8 of an inch, or roughly 1.25 inches wide at its widest point.
• Wedge-base bulbs such as the T10 are not interchangeable with bayonet-base or screw-base sockets, as the socket type must physically match the base style of the bulb.