2018 Acura RLX Bulb Size
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Bulbs Chart
2018 Acura RLX Back Up Light Bulb(Compare to original - Option 1) (921)
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Best Choice
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
Philips 12789LPB2 Bright White Vision
Halogen Lights
2018 Acura RLX Trunk or Cargo Area Light (168)
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Premium Pick
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 coatPIAA Xtreme White Plus High Performance
Halogen Lights
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For Car Dome, Map Door, Courtesy, License Plate Lights
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.Marsauto LED Light Bulb 6000K Replacement Bulbs
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Inexpensive But Reliable
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...Diode Dynamics HP3 LED Bulbs
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Extremely Bright
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).iBrightstar T10 168 LED Bulbs
LED Lights
2018 Acura RLX Interior Door Light Bulb (158)
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For Car Dome, Map Door, Courtesy, License Plate Lights, 168, 168NA, 2825R, 194R, 194LL, T10
【400% Brighter Than Halogen Bulb】 Marsauto 194 led bulb equipped with 5-SMD 3030 LED chips, delivering 400 lumens at just 2W power consumption and 12V. They offer 360°full-angle illumination with no dark spots, ensuring clearer visibility at night. It gives you a safe and comfortable driving experience. 【Wide Application】The led bulbs...Marsauto LED Light Bulb 6000K Replacement Bulbs
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
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