T15 921 LED Reverse Light Bulb – Extremely Bright White High-Power (Pair)
T15 921 LED Reverse Light Bulb – Extremely Bright White High-Power (Pair) - 6000K White is backordered and will ship as soon as it is back in stock.
Description
Description
High-Intensity LED Output for Clearer, Safer Reverse Visibility
Upgrade your vehicle’s reverse lighting with this pair of high-power T15/921 LED bulbs engineered for maximum clarity, accuracy, and reliability. Each bulb features four-sided illumination and a precision projector lens on top, creating a sharp, focused beam that delivers significantly more usable light than stock incandescent bulbs. The aluminum heat-sink housing ensures consistent thermal management and long-term durability, all in a compact, plug-and-play design that installs in minutes.
Key Benefits
Powerful, Real-World Brightness
Unlike many aftermarket bulbs that advertise inflated lumen figures, these LEDs are tested for true output. Each bulb produces 500 lumens of clean, white light, delivering a substantial improvement in reverse visibility and overall safety.
Advanced Projector Lens Design
The top-mounted projector lens amplifies the beam pattern, directing light farther down the road or driveway. Combined with side-mounted SMD LEDs, the result is bright, even illumination that makes reversing at night noticeably easier.
Enhanced Reliability
Built with an updated aluminum circuit board and full metal heat-sink structure, these bulbs dissipate heat efficiently to protect LED chips and maintain stable performance. This design prevents flickering, early failure, and brightness loss over time.
CK-Compatible and Non-Polar
These bulbs are engineered with a non-polar, CK-compatible electrical design, meaning they work in standard and reverse-polarity sockets. No guessing, no rewiring, no issues.
Quick, Simple Installation
The bulbs install directly into any 921/T15 socket with no modifications required. Just remove the old incandescent bulb and plug in the new LED.
Technical Specifications
Bulb Type: T15 / 921 LED
LED Chips: 12× 3030 SMD LEDs + 5 high-power chips on the projector
Output: 500 lumens per bulb
Construction: Full metal heat-sink housing
Illumination: Four-side output with top-projector lens
Electrical: Non-polar, CK-compatible
Installation: Plug-and-play, no errors
Quantity: Pair (2 bulbs)
Warranty: 2 years
Fitment & Compatibility
Direct replacement for factory incandescent bulbs in:
T15, 921, W16W, and other equivalent reverse light sockets.
Ideal for reverse lights, tail light housings that use 921, and some turn-signal applications requiring this size.
If you’re unsure which bulb your vehicle uses, we can help confirm the correct fitment.
Why Choose Underground Lighting
With over a decade of experience in automotive lighting, we engineer products that meet strict performance and quality standards. Every LED is built for real-world use—accurate brightness, stable operation, and reliable cooling. Our knowledgeable support team is always available to help with selection, installation, or troubleshooting, and every bulb is backed by our two-year replacement warranty.
Frequently Asked Questions (FAQ)
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
Warranty Information
T15 921 LED Reverse Light Bulb – Extremely Bright White High-Power ...
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