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Used for: Headlight Bulb High Beam and Low Beam
Used for: Back Up Reverse Light Bulb
Used for: Brake Light Bulb, Tail Light Bulb
Used for: Center High Mount Stop Light Bulb, Trunk or Cargo Area Light
Used for: License Plate Light Bulb, Courtesy Light Bulb
Used for: License Plate Light Bulb, Courtesy Light Bulb
Used for: Parking Light Bulb, Side Marker Light Bulb Rear, Turn Signal Light Bulb Front
Used for: Side Marker Light Bulb Front
Used for: Side Marker Light Bulb Front
Used for: Turn Signal Light Bulb Rear
Used for: Dome Light Bulb
Used for: Engine Compartment Light Bulb, Map Light Bulb
Used for: Glove Box Light Bulb
This 2012 Ford F-350 bulb size guide is designed to help you verify the correct replacement bulb by lighting position, so you can match the right bulb to the right socket before you buy. Whether you are replacing a headlight, a cargo light, or a license plate lamp, checking by location is the easiest way to avoid fitment mistakes.
Because trim level, body style, and lighting package can vary, the same 2012 Ford F-350 may use different bulbs in some positions depending on how it was equipped. Use the bulb chart on this page as a position-by-position reference for common exterior and interior lights on the truck.
For the best fit, compare the listed bulb size with the bulb already installed in your truck before ordering, especially if your F-350 has been modified or converted to aftermarket lighting. Halogen and LED replacements can look similar but may not fit or function the same way, and some LED upgrades may require additional parts to avoid warning lights or beam pattern issues. This is especially important on trucks with mixed trim or lighting packages, since the exact bulb used can differ by market, cab style, or factory option group.
The headlight bulb size listed for the 2012 Ford F-350 is H13 for both high beam and low beam applications on this page.
The front turn signal light bulb is listed as 3157A for the 2012 Ford F-350.
The parking light bulb size listed for the 2012 Ford F-350 is 3157A.
Both the brake light bulb and tail light bulb are listed as 3157R for the 2012 Ford F-350.
The rear turn signal light bulb is listed as 3157 on this page.
The back up reverse light bulb size listed for the 2012 Ford F-350 is 921.
The license plate light bulb is listed as 194 or 7441 for the 2012 Ford F-350.
The dome light bulb size listed for the 2012 Ford F-350 is 578.
The center high mount stop light bulb is listed as 912 for the 2012 Ford F-350.
Both the map light bulb and the engine compartment light bulb are listed as 906 for the 2012 Ford F-350.
The glove box light bulb is listed as 161 for the 2012 Ford F-350.
Yes. Trim, body style, and lighting package can affect bulb fitment, so it is smart to confirm the installed bulb before buying a replacement.