2018 Acura RLX Bulb Size

By clicking the link you will be redirected to Amazon.
Autofiles.com is reader-supported. When you buy through links on our site, we may earn an affiliate commission.

Bulbs Chart

Back Up Light Bulb(Compare to original - Option 1) - 921

Turn Signal Light Bulb Rear(Compare to original - Option 1) - 7440

Trunk or Cargo Area Light - 168

Interior Door Light Bulb - 158


2018 Acura RLX Back Up Light Bulb(Compare to original - Option 1) (921)

    LED Lights

  • Best Choice

    Philips 12789LPB2 Bright White Vision

    Replace your standard car lights with our robust Philips Vision LEDs that deliver dynamic lighting for your vehicle, both inside and out. The innovative design and unmatched performance of Philips Vision LEDs are available for brake and taillights, backup lights, dome lights, and license plate lights. These bulbs are covered

See more 921 LED Lights

2018 Acura RLX Turn Signal Light Bulb Rear(Compare to original - Option 1) (7440)

    LED Lights

  • We Recommend

    Yorkim 194/7440 LED Bulb

    York Light Bulbs are designed with low temperature and low power consumption. More than 400% brighter than the original halogen bulb, full Aluminum Housing with Projection lens for Maximum Light output and better heat distribution, built Constant Current IC for a Longer lifespan. Normally use as Map Light, Dome Light, License

See more 7440 LED Lights

2018 Acura RLX Trunk or Cargo Area Light (168)

    Halogen Lights

  • Premium Pick

    PIAA Xtreme White Plus High Performance

    The Xtreme White Plus Series of high output replacement bulbs give drivers better color recognition, depth perception, and improved contrast over stock halogen bulbs, all while meeting DOT specification. Xtreme White Plus bulbs feature a crisp white light output that allows for better road illumination, while a blue top coat

See more 168 Halogen Lights

    LED Lights

  • For Car Dome, Map Door, Courtesy, License Plate Lights

    Marsauto LED Light Bulb 6000K Replacement Bulbs

    No polarity no flip: it is truly no polarity, can light on two sides, no need more modification or flip, plug and play, easy install within 5 minutes.
  • Inexpensive But Reliable

    Diode Dynamics HP3 LED Bulbs

    Design. The 194 HP3 LED bulb is a compact, simple LED replacement with proven performance. The single diffused optic spreads light in the original lamp, for OEM-style appearance and function. With its dual-lead contacts, it will fit snugly in the socket, and its light weight means it won't vibrate loose over...
  • Extremely Bright

    iBrightstar T10 168 LED Bulbs

    Product benefits:  Non-polarity design, 500% brighter than original halogen bulb, aircraft grade aluminum heat sink with Low temperature for Longer life span & Low Power Consumption (Up to 50,000 Hours Service Life).

See more 168 LED Lights

2018 Acura RLX Interior Door Light Bulb (158)

    LED Lights

  • For Car Dome, Map Door, Courtesy, License Plate Lights

    Marsauto LED Light Bulb 6000K Replacement Bulbs

    – Better beam pattern: each bulb has 5 pcs high power SMD led. – No polarity no flip: it is truly no polarity, can light on two sides, no need more modification or flip, plug and play, easy install within 5 minutes. 194 led bulbs could fit most of the positions of

See more 158 LED Lights

Acura RLX Bulb Size By Years

If you’ve ever fumbled with headlights or turn signals on a 2018 Acura RLX, this bulb size chart solves that confusion. I compiled the chart to map each lamp location to the correct bulb type, so you can order parts confidently and avoid returns. The list highlights recommended replacements, common fitment constraints, and the trade-off between OEM and aftermarket options. My assumption is you have basic tools and light mechanical experience. Use the chart to validate part numbers against what you remove from the car. It’s meant for quick verification during purchase or maintenance, not as a full repair guide. As a practitioner, I recommend checking socket type and lumen ratings before installation. Affiliate disclaimer: some links on the page are affiliate links. If you buy through them I may earn a small commission at no extra cost to you. This helps keep the chart updated and unbiased.

2018 Acura RLX specs
Compare

Exterior

Bulbs

Forgive our ad-diction! It's just our funky little way of keeping the lights on. Bear with us!