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Underground Lighting  |  SKU: T15-w

T15 921 Canbus Projector LED Light Bulbs, Extremely Bright High-Power (PAIR)

Regular price $39.99

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Description

T15 921 LED Light Bulb – Product Overview and Description

  • Direct replacement for factory incandescent 921 T15-size for the tail light bulb and or turn signals.
  • 12 3030 SMD type LED with a 5 high-power chip mounted at the top.
  • Full metal heatsinking for reliable operation.
  • Nonpolar and CK compatible electrical design.
  • Increased output with LED appearance.
  • Plug and play, simple installation, No Errors.
  • 500 lumens per bulb.
  • 2 Year Warranty

The Underground lighting T15 921 LED Light bulb Is great for a lot of applications. This T15 921 Led can be used in headlights, for city/ cornering lights, parking lights, and DRL. It is also great for 3rd brake lights in trucks and Interior lights. These are manufactured with four side illumination and a projector lens on top increasing the overall brightness. The aluminum housing distributes heat evenly to maximize the lifespan of the bulb. And the best part is that these projector LED light bulbs are plug and play so installation is quick and simple.

Illumination. All Underground Lighting LEDs are rated with accurate lumen figures, never calculations or guesses. We test the true output and provide you with real numbers to compare. At 1000 lumens, the Underground Lighting white backup LED will provide more total light output than a factory incandescent bulb.

Dependability. Unlike other bulbs on the market, this bulb is built with the latest updated aluminum circuit board for quick heat dissipation and better-LED chip protection to ensure durability. This 921 LED light bulb will last for years, rather than months, with no flickering or failure. And like every Underground Lighting product, it's backed by our industry-leading two-year replacement warranty.

Expertise. After over a decade in business, Underground Lighting is one of the most trusted names in automotive lighting. We design and manufacture all of our own products to meet our strict quality standards. We pride ourselves on having a knowledgeable staff to deliver superior service that will exceed your expectations. Please contact us if you'd like to discuss your lighting needs.

Frequently Asked Questions (FAQ)

Frequently Asked Questions on LEDs

Which Color Is Best for Headlight Bulbs?

The best color for your headlight bulbs is white. You want to find a bulb around the range of 6000k in color temperature. The human eye reads this color and brightness better due to its similarity to natural sunlight.

That said, the best color for your headlights can be subjective. LEDs are also available in yellow, blue, and purple. Each color will work just fine on the roads and give your car a more distinctive look than the traditional white color.

Will LED Headlights Damage My Car?

No. LED headlights will not damage your car if properly installed. In addition, you want to purchase the correct LED light that will fit your car. For example, if your vehicle has a CANbus system, you want to buy the right product and install it correctly to avoid any potential issues.

If your car was not originally designed for LED headlights, you can purchase an LED headlight conversion kit. They are safe and will not damage your vehicle as long as you buy top-quality products.

Why Are LED Lights Better?

An LED light bulb saves more energy, produces less heat, and has more light. In addition, it uses 85% less electricity than standard lighting. It is also a lower-cost product but has bright light with a longer life span.

LED light is different from incandescent light. Blue LED combined with yellow phosphor creates white light. The high efficiency of LED light makes it a popular choice.

What Is the Purpose of LED Lights?

LED lights are used as a light source in our homes, devices, and vehicles. LED (light-emitting diode) lights use gallium compounds such as gallium arsenide and aluminum gallium. LED emits light by combining a P-type semiconductor with an N-type semiconductor. Once a voltage is applied, they release energy into light.

What Is the Lifespan of LEDs?

LEDs have a long life span. When an LED is operating at 70% capacity, it has reached the end of its life span.

Incandescent bulbs have around 750 to 2,000 hours of light. In comparison, LED bulbs can have 50,000 to 100,000 hours of light, making them better investments.

Can I Replace Incandescent Bulbs with LED in My Car?

Yes! You can change your initial bulbs to LED in your vehicle. In addition, there are different places where you might want to swap out for LED lights. For example, you can change your headlights, rear license plate lights, interior door entry lights, rear brake lights, and more.

First, however, you need to inspect what type of bulb you need. There are different bulbs with various designs, so you must buy the right one to fit.

Second, different areas of your car may require special tools or specific parts to work properly. Once you have found the products you need, you’re ready to go LED.

To find more questions and answers, please visit our FAQ Page. 

Warranty Information

This product has a 2 year warranty

Payment & Security

Payment Methods

  • American Express
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  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Venmo
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

WHAT'S INCLUDED

BULBS :
2X 921 LED Bulbs
WARRANTY :
2 Year Warranty

COMPATIBILITY

CROSS-COMPATIBILITY :
T8, T12,T15, 194, 175, 168, #555, 2886X, 194R, 161B, 3652, 193, 658, 2827, 194NA, 161, 558, 168NA, 2825, 194G, 160, 168A, 192, 2821, 194B, 158, W5WB, 579, 168, 2825ST, 168ST, 3652LL, 579LL, 2825LL, 168NALL, 2825L, 2821LL, 168LL, 194ST, 161LL, 194NALL, 2827LL, 158LL, 194LL, 906NA, 917, 906, 916NA, 904NA, 922, 916, 904, 921, 912, 920, 921K, 916LL, 921LL, 912LL, 920LL, 917LL, 906LL, 916NALL, 904LL, 921ST
FITMENTS :
Interior, Upper 3rd Brake light, Reverse Light and More
CIRCUITS :
9V-12V

TECH SPECS

INTENSITY :
500LM
  • Talk to a Specialist

    Call us (561) 918-5225

  • 45 Day Return Policy

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  • 5 stars: 26 (96%)
  • 4 stars: 1 (4%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
Some of the reviews shown are from related products the merchant grouped with this one.
R
Russell G Selmer
Make backing up safer!

The lights are very bright, installation was easy, and I am very pleased with my purchase. Thank you; Be Blessed. Russell

R
Richard Barnes

T15 921 Canbus Projector LED Light Bulbs, Extremely Bright High-Power (PAIR)

M
Mark Jones
Bright,Really Bright!

Really bright, even with tailight covers on!

Z
Zach Gardner
Huge Upgrade from factory bulbs

I just installed these in my ram 1500. It's amazing how much brighter these bulbs are from the factory bulbs.

C
Chris Mallory
Reverse Lights

Great product. Very bright!!

J
Jaime Lopez

T15 921 Canbus Projector LED Light Bulbs, Extremely Bright High-Power (PAIR)

J
John Swenson
Reverse light replacements

Super bright. Love that I can see backing up now!

T
Tim
F 150 cargo bed lights

This is another great upgrade for your cargo bed . When using the bed at nite the cargo area is bright like broadway using these two white LED’s. These were so easy to swap on my 2023 F 150 RCSB 4X4. Thank you Danny for the recommendation to ue these.

T
T.K.
Hood light for engine

Very big improvement and great replacement for the engine compartment lighting

J
John Wesley
They don’t fit

I bought 2 sets on for a 2020 Honda hhr and one for 2019 ram 2500. Niether set fits

19 ram should take 7440 and these will fit a Honda HRV

N
Neal Hufstetler
Very Bright

Ordered the back up lights for my 2017 GMC Sierra. They’re much brighter than the OEM and gives the truck a newer appearance.

L
Lance Keenan

T15 921 Canbus Projector LED Reverse Light Bulbs, Extremely Bright White High-Power (PAIR)

C
Christopher Coll
1 x T15 921 Canbus Projector LED Reverse Light Bulbs

The bulbs work very well. I bought them for
My wife’s vehicle and she is also loving the fact that she backs her car up now with more light. Great product. Thanks Underground Lighting!

j
jason

These are the best and brightest reverse lights imaginable. These I truly do live!!!

R
Robert HODGES
T15 921 Canbus Projector LED Reverse Light Bulbs

The T15 921 Canbus Projector LED Reverse Light Bulbs are much brighter than the stock bulbs and work great with the Canbus system on my 2012 Ram 1500.

R
Robert Andrews
Great product

Very bright and well made. I highly recommend this product and this company and in fact I tell my friends about them all the time.

R
Robert Andrews
Great product

Very bright and well made. I highly recommend this product and this company and in fact I tell my friends about them all the time.

J
Jeffrey Dodd
Look and work great on my 2013 Tundra

These reverse LED lights look and function great. Would recommend to a friend

S
Shawn R

Huge improvement
Live in the country and have to back out of wooded streets

J
Jacob Hocker
921 Backup bulbs

Super bright! Easy install, work great!!

M
Mitchell Bishop

Very brite I like them can see real clear when backing up 5 stars put them on all 3 of my cars

J
Jaquob Proctor
Amazing bulbs

These bulbs are super bright with quality built. I am able to see so much better when backing up. Thank you

B
Ben Davidson
I can see

My old reverse lights were not very helpful when backing up, but with these I can now see!

B
Ben Davidson
I can see

My old reverse lights were not very helpful when backing up, but with these I can now see!

G
Garrett
Bright Lights! Easy to install

Thank you for super bright lights. They are extremely easy to install. It just took a few minutes to install them. Now, the reverse lights look very bright. Also, swift shipping. I am glad for that.

M
Morgan
Perfect for Reverse Lights

I am happy with the purchase. The product guarantees efficient lighting for my BMW 335i 09 car. I have used it for reverse lights. And, the lights are not overwhelming at all. No sudden brightness that can cause problem with the back camera. It works well with other lights on my BMW 335i 09 car.

M
Morgan
Perfect for Reverse Lights

I am happy with the purchase. The product guarantees efficient lighting for my BMW 335i 09 car. I have used it for reverse lights. And, the lights are not overwhelming at all. No sudden brightness that can cause problem with the back camera. It works well with other lights on my BMW 335i 09 car.