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⚡ The best C10W bulbs in stock
Stock checked on October 6, 2026
The best C10W bulbs in stock
iBrightstar 9-30V 578 211-2 212-2 569 214-2 41mm 1.61" Festoon Canbus Error-Free 6SMD LED Bulb, for Interior…
iBrightstar 9-30V Extremely Bright 211-2 212-2 578 Festoon LED Bulbs Error Free 1.61" 41mm for Interior Map…
Serundo Auto 578 212-2 211-2 Led Bulb 41mm 42mm 1.65in Led Festoon Bulb 4pc
Marsauto 578 LED Bulbs Extremely Bright 400LM 2835 Chipsets for LED Interior Dome Map Door Lights Bulbs 211-2…
569 578 LED Bulbs Xenon White 570 Lumens Super Bright 3014 48-EX Chipsets 211-2 212-2 LED Bulbs Used for Car…
SEALIGHT 578 LED Bulb Super Bright 6500K White 212-2 569 6411 6418 6451 211-2 LED Bulb Interior Car Light…
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Cars that use a C10W bulb
We don’t have any cars with this bulb in our English database yet. Search for your car to see all its bulbs.
Which C10W to buy: standard, brighter or long life
- Standard: the classic incandescent bulb; cheap and no dashboard warnings.
- LED: whiter light and lower power draw. On turn signals and brake lights they can cause hyperflash or bulb-out warnings: choose CANbus versions or add load resistors.
- Long life: handy where bulbs are hard to reach (tail lights or dome lights).
To confirm which bulb each light on your car uses, follow the methods in how to find out which bulb your car takes.
Signal & interior bulbs
Frequently asked questions
What is a C10W bulb?
The C10W is a 10 W, 12 V automotive bulb with a SV8.5 base. It’s also sold as 578 and 211-2.
Is the C10W the same as the PY21W?
No. Even if they look alike, each size has a different base (SV8.5 on the C10W) and won’t fit another size’s socket. Always buy the exact size your car takes.
Can I replace a C10W with an LED?
Yes, LEDs are common for turn signals, parking, license plate and dome lights. Pick CANbus versions or use load resistors to avoid hyperflash and bulb-out warnings, and keep the correct color (amber for turn signals, red for brake lights).