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 the 2017 Lexus RX 350 and helps you verify bulb sizes by lighting position, so you can match the correct replacement before you buy. Because exterior and interior lamps can vary by trim, package, and market, it is best to confirm the bulb type for each specific socket instead of relying on a single all-around fitment.
For this model year, the listed bulb positions include the back up reverse light, trunk or cargo area light, interior door light, front turn signal, parking light, rear turn signal, and front side marker. Use the bulb chart on this page as a quick reference when replacing a burned-out bulb or planning a maintenance order for your RX 350.
Fitment can differ depending on trim level, lighting package, body style, and whether the vehicle uses halogen or LED assemblies in certain positions. That is especially important on the 2017 Lexus RX 350, since some owners may have aftermarket conversions or replacement housings that change the required bulb type. Before ordering, check the installed bulb directly, compare the base and connector shape, and make sure the replacement matches the original application. If a previous owner has installed LEDs or non-OE parts, the bulb chart may not match what is currently in the vehicle, so a visual inspection is the safest step.
The listed bulb size for the back up reverse light on the 2017 Lexus RX 350 is 921.
The trunk or cargo area light uses bulb size 168 on this page for the 2017 Lexus RX 350.
The interior door light bulb is listed as 168 for the 2017 Lexus RX 350.
The front turn signal light bulb is listed as 7444NA.
The parking light bulb is listed as 7444NA on this 2017 Lexus RX 350 page.
The rear turn signal light bulb is listed as 7440A.
The front side marker light bulb is listed as 168NA.
Yes. Trim level, lighting package, and market can affect bulb fitment, so it is important to verify the exact lamp position on your vehicle.
Not always. Some vehicles use different housings or integrated LED assemblies, so a halogen bulb size listed here may not apply to every lighting configuration.
Yes. Checking the installed bulb is the best way to confirm the correct fit, especially if the vehicle has aftermarket parts or a prior bulb conversion.
Aftermarket LEDs can change the original fitment, so compare the current bulb to the chart and verify the socket, base, and physical size before ordering a replacement.
Yes. It includes common exterior and interior positions for the 2017 Lexus RX 350, making it easier to find the right bulb by location.
