Used for: Back Up Reverse Light Bulb
Used for: Parking Light Bulb, Turn Signal Light Bulb Front
Used for: Side Marker Light Bulb Front
Used for: Turn Signal Light Bulb Rear
Used for: Interior Door Light Bulb, Trunk or Cargo Area Light
This page covers bulb fitment for the 2022 Lexus RX 350 and is organized by lighting position so you can quickly verify the correct bulb type before ordering. Whether you are replacing an exterior lamp or an interior bulb, checking the exact location on the vehicle helps avoid confusion between similar-looking sockets and trim-specific variations.
The 2022 Lexus RX 350 uses LED lighting in many positions, but some locations still use replaceable bulbs such as the back up reverse light, glove box light, cargo light, and certain signal or marker lamps. Use the chart on this page to match each bulb size to the correct function, especially if you are comparing front, rear, and interior lights on the same vehicle.
Fitment can vary by trim, lighting package, market, and body style, so it is smart to confirm what is actually installed on your RX 350 before buying replacements. Some versions use factory LED modules that are not serviced like traditional halogen bulbs, while other positions may accept standard bulb replacements or LED upgrade bulbs. If you are converting from halogen to aftermarket LED, make sure the bulb base, polarity, and physical clearance are compatible, and check for warning messages or beam pattern issues. The safest approach is to inspect the old bulb or housing first and compare it with the listing for your exact 2022 Lexus RX 350 configuration.
The headlight high beam and low beam on the 2022 Lexus RX 350 are listed as LED. Because these are factory LED units, they are typically not replaced with a standard bulb size the way halogen headlights are.
Yes. The front fog light bulb is listed as LED on this model year. If the fog light stops working, the repair may involve an LED module or assembly rather than a simple bulb swap.
The back up reverse light bulb is listed as 921. This is one of the more common replaceable bulbs on the vehicle and is a good item to verify by location before purchase.
The front turn signal bulb is listed as 7444NA. Always confirm whether your vehicle has the same bulb style installed, since trim and market differences can affect lighting equipment.
The rear turn signal bulb is listed as 7440A. This is separate from the front turn signal bulb, so it is important to choose the correct position when ordering.
The license plate light bulb is listed as LED. On many vehicles, this means the light uses an LED unit or module rather than a traditional replaceable incandescent bulb.
The parking light bulb is listed as 7444NA, with an optional note on some configurations. Check the installed bulb and housing before buying, since lighting packages can vary.
Interior bulb locations on this page include the glove box light, dome light, map light, trunk or cargo area light, and interior door light. Several of these are listed as LED, while the trunk or cargo area light and interior door light are listed as 168.
The front side marker light bulb is listed as 168NA. The rear side marker light is listed as LED, so the front and rear positions are not the same on this model year.
Some positions on the RX 350 already use factory LED lighting, while others may accept replacement bulbs or aftermarket LED upgrades. Before converting, confirm the bulb base, fitment, and whether the housing is designed for a serviceable bulb or a sealed LED assembly.
Match the bulb to the exact lighting position on the vehicle, then compare it with the installed bulb or the owner’s manual if needed. Because trim and lighting package differences can change the setup, checking the original bulb before ordering is the best way to avoid a mismatch.
No. Trim level, lighting package, market, and body style can change bulb fitment. This page is meant to help you verify the bulb by position, but you should still confirm the exact configuration on your specific RX 350.
