
Marsauto M1C H11 LED Fog Light Bulbs, 30000LM 6000K Cool ...
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Used for: Fog Light Bulb Front
Used for: Fog Light Bulb Front
Used for: Headlight Bulb High Beam, Headlight Bulb Low Beam, Daytime Running Light Bulb
Used for: Back Up Reverse Light Bulb, Center High Mount Stop Light Bulb, Turn Signal Light Bulb Front, Turn Signal Light Bulb Rear
Used for: Brake Light Bulb, Tail Light Bulb
Used for: License Plate Light Bulb, Trunk or Cargo Area Light
Used for: License Plate Light Bulb, Trunk or Cargo Area Light
Used for: Parking Light Bulb, Side Marker Light Bulb Front
Used for: Side Marker Light Bulb Rear
Used for: Automatic Transmission Indicator Light Bulb, Courtesy Light Bulb
Used for: Dome Light Bulb, Map Light Bulb
Used for: Glove Box Light Bulb
This 2003 Acura RSX bulb size guide helps you verify the correct replacement bulb by lighting position, so you can match the right part before you buy. Whether you are replacing a headlight, interior lamp, or exterior signal bulb, the page is organized to make fitment checks easier for the RSX.
Bulb sizes on the 2003 Acura RSX can vary by trim, lighting package, body style, and market, so it is smart to confirm each location individually. Use this page to compare the bulb type for the front, rear, and cabin lights instead of assuming one bulb fits every socket.
For best results, compare the bulb listed here with the one already installed in your car before ordering, especially if your RSX has been modified or converted to LED lighting. Trim and package differences can affect fog lights, courtesy lights, and other positions, and aftermarket conversions may change the required bulb style or connector fit. If you are switching from halogen to LED, make sure the replacement is compatible with the housing and does not create clearance, beam pattern, or warning-light issues. When in doubt, remove the old bulb and check the base and markings directly so you can avoid ordering the wrong part.
The low beam headlight bulb for the 2003 Acura RSX is H1.
The high beam headlight bulb for the 2003 Acura RSX is H1.
The daytime running light bulb for the 2003 Acura RSX is H1.
The front turn signal light bulb is 7440.
The rear turn signal light bulb on the 2003 Acura RSX is 7440.
Both the brake light bulb and the tail light bulb are 7443R on the 2003 Acura RSX.
The center high mount stop light bulb is 7440.
The back up reverse light bulb for the 2003 Acura RSX is 7440.
The front parking light bulb and the front side marker light bulb are both 2827.
The rear side marker light bulb is 168NA.
Both the dome light bulb and the map light bulb are DE3175.
The glove box light bulb is DE3021, and it is listed as optional.
The license plate light bulb is 168 or 917.
The trunk or cargo area light bulb is 168 or 917.
The automatic transmission indicator light bulb is 2721.
The courtesy light bulb is 2721.
The front fog light bulb is listed as H11 LED or H16 LED, depending on the setup and conversion used.
Yes. Trim, lighting package, body style, and market can affect certain bulb positions, so it is best to verify each location on the vehicle before buying replacements.
Yes. Checking the installed bulb is the safest way to confirm fitment, especially if the car has aftermarket parts, LED conversions, or previous repairs.