What is a 7440-bulb used for?

As forementioned, 7440 is for signal filament such as turn signal, or back up light.

What is a 7443-bulb used for?

7443 is for dual filament like Parking and Turn signal or Brake and Turn Signal.

Are 7443 and 3157 bulbs interchangeable?

While they are not exactly the same, 7443s and 3157 bulb models are in close competition with one another. The main difference between the two is the size—the 7443 bulb is slightly larger. Both the 3157 model and the USA-designed 7443 Switchback LED bulb offer a stellar choice for direct turn signal replacement bulbs. They also both offer white/amber light filaments, as well as protection against hyper-flashing and error codes. The 7443 also comes complete with a built-in resistor on the turn signal filament, as opposed to both the white and amber light filaments. This added protection against overheating is very valuable. As with the 3157, the 7443 features dual-colored LED lights with 360-degree output for that coveted “best in class brightness.” This model, like the 3157, also offers easy, “plug and play” installation for additional time-saving benefits. No additional resistors are needed, adding to the benefit of this bulb model.

What size are 7440 bulbs?

Size is a factor when you’re trying to establish compatibility between different types of turn signal bulbs and your car or truck’s make and model. 7440 single filament bulbs are typically 25 watts and used as rear turn signal lights as well as reverse lights, depending on the vehicle. They cannot be placed into a 7443-bulb socket; however, a 7443-replacement bulb can often be placed successfully into a 7440 socket.

How many lumens does a car brake light have?

The amount of light output from a car’s rear brake lights depends on the particular car or truck in question. Typically, rear brake lights are between 5 and 100 lumens. By comparison, front car lights range anywhere from 10 to thousands of lumens. That’s quite a difference! To illustrate the difference, consider this—on a clear night, a full moon is approximately 1 lumen. This gives you a visual example of the power of car brake lights’ lumens.

SKU:

Availability: Many in stock

7440/7443 Backup LED Bulbs (PAIR)

$34.99 ~~$0.00~~ /

Special Offers

15% OFF All PURCHASES!!

Code: Holiday15

Quantity

Description

Direct replacement for factory incandescent 7440/7443-size for Backup Light.
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.
500 lumens per bulb.

Overview

The 7440/7443 Underground lighting tail light bulb is 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 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 500 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 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 in 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.

Please Note: 7443 CAN REPLACE 7440, BUT 7440 CANNOT REPLACE 7443.

[tabs][tab title="Warranty"] This product comes with a 2 year warranty. [/tab][/tabs]

Warranty

This product comes with a 2 year warranty.