2015 Cadillac CTS Bulb Sizes

Headlight Bulb High Beam - H9

Headlight Bulb Low Beam - H11

Headlight Bulb High Beam and Low Beam(Coupe, with HID headlights) - D1S

Headlight Bulb High Beam and Low Beam(Sedan) - D3S

License Plate Light Bulb - 2825

Back Up Reverse Light Bulb - 921

Parking Light Bulb(Coupe) - 2825

Dome Light Bulb - 2825

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