Audi TT 2001 Bulb Size
Bulb size chart
This 2001 Audi TT bulb size guide is designed to help you verify the correct bulb by lighting position before you buy replacements. The TT used a mix of halogen and HID lighting depending on trim and market, so checking the exact lamp location is the best way to avoid ordering the wrong part.
Use this page as a quick reference for exterior and interior bulbs on the 2001 Audi TT. Whether you are replacing a headlight, tail light, license plate light, or cabin bulb, matching the bulb size to the correct position makes the job faster and helps ensure proper fitment.
Fitment can vary by trim, lighting package, body style, and market, so always compare the bulb in the car with the listing before purchase. This is especially important on the 2001 Audi TT because low beam headlights may use H1 bulbs on halogen-equipped cars or D2S bulbs on HID-equipped cars. Some owners also upgrade to aftermarket LED replacements or conversion kits, but those changes may affect beam pattern, warning messages, or legal compliance. When possible, check the installed bulb number, connector style, and housing type before ordering, since a bulb that fits one TT configuration may not fit another.
FAQ
What low beam headlight bulb does a 2001 Audi TT use?
The 2001 Audi TT may use an H1 low beam bulb with halogen headlights or a D2S low beam bulb with HID headlights. The correct choice depends on the headlight package installed on the car.
What bulb size is used for the front turn signal on a 2001 Audi TT?
The front turn signal light bulb is 64136 on the 2001 Audi TT.
What bulb size is used for the rear turn signal on this model year?
The rear turn signal light bulb is 7506 on the 2001 Audi TT.
What bulb does the brake light use on a 2001 Audi TT?
The brake light bulb is 7528.
What bulb does the tail light use on a 2001 Audi TT?
The tail light bulb is also 7528.
What bulb is used for the back up reverse light?
The back up reverse light bulb is 7506.
What bulb size fits the license plate light?
The license plate light bulb is 6418.
What bulb is used for the courtesy light?
The courtesy light bulb is 6418.
What bulb fits the dome light and map light?
The dome light uses 6411 or 6428, while the map light uses 64111.
What bulb is used for the glove box light?
The glove box light bulb is 2821.
What bulb fits the trunk or cargo area light?
The trunk or cargo area light uses 2825 or 98.
What bulb is used for the rear side marker light?
The rear side marker light bulb is 2825 or 98.
What bulb is used for the front side marker light?
The front side marker light bulb is 64132.
What bulb is used for the parking light?
The parking light bulb is 64132.
What bulb is used for the fog light on the 2001 Audi TT?
The front fog light bulb may be H3C or H3, depending on the setup installed on the car.
Does the center high mount stop light use a standard bulb?
The center high mount stop light is listed as LED on this page, so it is not shown as a standard replaceable bulb size here.