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The LED Authority

Philips LED 921 Vision Exterior Auto Bulb (Pack of 2)

SKU: 921 LED | Ordering Code: 12841B2  | UPC: 046677718015

$29.98  ($14.99 per Bulb)
Pack of 2
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  • Estimated life of 96 years based on 3 hours use per day
  • No lead or mercury means easy and environmentally safe disposal

PHILIPS Vision LED 921 Exterior Automotive Lighting.

  • Long Lasting LEDs- 12 year lifetime-Guaranteed
  • Fast Response Time: Quicker Light Up Means Greater Driver Safety
  • Street Legal LEDs
  • Match number 921 with your current lamp to get an exact match
  • Also Fits: T16, W16W
  • Application: Reverse Lighting
Full Specs


Philips Lighting

Product Line

Vision LED

Energy Used

A rating, expressed in watts, to indicate the rate at which a lamp consumes energy. Also known as wattage value.
Energy Used
3.4 Watts


A measure of "electrical pressure" between two points. The voltage specification of an incandescent lamp is the electrical "pressure" required to drive it at its designed point. The "voltage" of a ballast (e.g. 120 V) refers to the line voltage coming from the power source and is connected to the ballast.

Bulb Color

The color of the light produced by a bulb
Bulb Color

Color Temperature (Kelvin)

An expression of the hue of the light emitted, measured in degrees Kelvin. Usually expressed by a four digit number followed by (k), such as 2700k. Higher temperatures indicate whiter, "cooler" colors, while lower temperatures indicate yellower, "warmer" colors. Some common Kelvin temperature benchmarks are 2700k (warm white), 3500k (neutral white), 4100k (cool white), 5000k (bright white), and 6500k (daylight).
Color Temperature (Kelvin)

Bulb Finish

The surface finish of a bulb, which may affect the quality of the light emitted.
Bulb Finish

Bulb Technology

The technology implemented by the bulb, e.g. incandescent, halogen, LED
Bulb Technology

Average Rated Life (hr)

A measurement of the average length of time, between first use and the point when 50% of the lamps tested have stopped functioning, , using an operating cycle of 3 hours on, 20 minutes off.
Average Rated Life (hr)
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Q & A

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1 Question | 1 Answer
Displaying question 1
  • Q:

    Putting these in a ford F1 50 only one light works do you need a resistor to get it to work?
    Asked on 4/8/2016 by Tom from Ohio

    1 answer



      Hello and thank you for your question. A 921 should not require a load resistor to work since its only is used for back-up. If it does, then you would need to purchase a CEA21W and connect it in parallel with the circuit. For any additional questions, please contact us at 888-455-2800. Thank you for shopping at

      Answered on 4/15/2016 by Dan from Worcester, MA
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