2018 Toyota Prius Prime Bulb Size

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Bulbs Chart

Back Up Reverse Light Bulb - 921

Trunk or Cargo Area Light - 168

Dome Light Bulb - DE3175

Map Light Bulb - 168

Interior Door Light Bulb - 168


2018 Toyota Prius Prime Back Up Reverse Light Bulb (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 Toyota Prius Prime 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 Toyota Prius Prime Dome Light Bulb (DE3175)

    LED Lights

  • Premium Quality

    Ruiandsion DE3175 LED Dome Light Bulb

    Product Benefits Super Bright Each LED festoon bulb has 12 pieces 2835 chipsets high brightness LED and is made with an aluminum body design for better heat dissipation Much brighter than original bulbs.No tools needed No modification of wire is needed. Socket type 31mm festoon Light Bulbs.Fit sockets: DE3175 DE3021 DE3022 DE3023 DE3175LL DE3021LL...

See more DE3175 LED Lights

2018 Toyota Prius Prime Map Light Bulb (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 Toyota Prius Prime Interior Door Light Bulb (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

Toyota Prius Prime Bulb Size By Years

When I first looked up replacement bulbs for my 2018 Toyota Prius Prime, I felt lost in codes and sizes. Think of this bulb size chart as a clear map that lists the common bulbs — headlights, turn signals, brake lights, reverse lamps and interior bulbs — matched to that exact model year. My mental model was simple: match the socket and wattage, and you’re usually good to go. A small win came when I swapped a burned tail light using the chart, which saved a trip to the shop. As you expand to other lamps, use the rule of thumb of checking both the chart and the physical bulb before buying. I’ll share refinements I learned, like noting LED conversions and polarity issues. Quick recap: this list is meant to guide confident replacement for a 2018 Toyota Prius Prime. I participate in affiliate programs, so if you buy through links on this page I may earn a commission at no extra cost to you.

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