SKU: 70760770136

Diode Dynamics 4257 HP24 LED Cool White Switchback (single)

Sale price$35.96 Regular price$39.95
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Ships within 48 hours · Estimated delivery Aug 21 - Aug 26

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Description

Diode Dynamics 4257 HP24 LED Cool White Switchback (single)Features True replacement for factory incandescent 4257 size front turn signal bulb. Custom molded base connector for correct fitment. Adds cool white running light, along with amber turn signal. High power Samsung LEDs arranged around the bulb. No yellow appearance when switched off. Non polar and CK compatible. Plug and play, simple installation. Overview Upgrade. Add dual color functionality and a modern appearance to your front turn signals with

Features

  • True replacement for factory incandescent 4257-size front turn signal bulb.
  • Custom-molded base connector for correct fitment.
  • Adds cool white running light, along with amber turn signal.
  • High-power Samsung LEDs arranged around the bulb.
  • No yellow appearance when switched off.
  • Non-polar and CK compatible.
  • Plug and play, simple installation.

Overview

Upgrade. Add dual-color functionality and a modern appearance to your front turn signals with the 4257 HP24 turn signal bulb. Populated with sixteen amber chips and eight white chips, this bulb lights up white when your headlights are turned on, and flashes amber when the turn signals are activated. Housed in an aluminum casing for maximum heatsinking properties, the HP24 will last for years to come. Best of all, installation only takes minutes - simply take out your factory bulb and the HP24 will fit snugly in the socket.

The 4257 HP24 Switchback bulb features a custom-molded base connector, making it a true replacement for factory incandescent 4257-size front turn signal bulbs. Unlike a 3157 bulb that includes tabs on either side of the bulb, a 4257 bulb does not. The 4257 HP24 Switchback bulb is compatible with Ford vehicles using a dual-filament 4257-size front turn signal bulb with a clear reflector lens.

Brightness. At 410 lumens, the HP24 will provide about double the total light output compared to your factory bulb. All Diode Dynamics LED lighting is rated with accurate, measured lumen figures, not calculations or guesses. We test the true output in-house, and provide you the real numbers to compare.

Reliability. Unlike other bulbs on the market, this bulb is built with constant-current circuitry, along with transient suppression, meaning this bulb will last for years to come.

Direct replacement for your factory bulb

Included Quantity: One (1)

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 70760770136

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4.8 ★★★★★
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Sam Meng
Birmingham, US
★★★★★ 5
Great quality and noticed an immediate difference!
Style: BE-966H 1-Pack
Even though it’s not the OEM (original) filter, the quality is outstanding! It was easy to install and fits perfectly. I noticed a significant improvement in the air quality inside my car right away. Definitely a great buy!
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Reviewed in the United States on May 23, 2026
S
Verified Purchase
Seaner
Fort Morgan, US
★★★★★ 5
Easiest DIY ever
Style: BE-157H 1-Pack
So a Toyota dealer will want $40+ to replace this filter, but for $10 and 2mins you can easily do this yourself. There’s a great 1:30 how-to vid on the YouTube, drop the glove box (one push) open the little door, remove old filter (note the arrow) and put in the new one, close door, close glove box, enjoy better flow and fresh air. This filter is a HEPA so it’s a performance upgrade over the OEM, fit is perfect, seems sturdier than the OEM, great value if you’ve got 2mins. Highly recommend. Thanks!
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Reviewed in the United States on June 23, 2025
K
Verified Purchase
Karen Michael-Pook
Chelsea, US
★★★★★ 5
Awesome Cabin Air Filter
Style: BE-151H 1-Pack
This product is not only cost efficient, it was also easy to install. The instructions in the package were helpful. I would definitely recommend using this filter for your 2017 Hyundai Sonata.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 13, 2026
M
Verified Purchase
milt loper
Waukegan, US
★★★★★ 4
the "fit" is very precise
Style: BE-176H 1-Pack
Nice Fabrication, Good materials, perfect adhesive applications, "clean joints" etc. Appears to be a good UPGRADE from the stock Motorcraft product. CONs: The FIT was a "smidge TIGHT", and took very precise initial alignment and "pressure" to begin to slide into the rectangular hole. I measured the "Hole" at 7.375" wide, or (187.33 mm)... the FILTER is exactly the SAME. I would suggest maybe reducing the Width by 1 mm, to allow for an easier installation. The MOTORCRAFT uses an "open-cell" foam structure for the (2) Side pieces on their filter assembly, allowing some "compression to fit", of the Width, easing the difficulty of installation, yet still filling all voids. In summation, the "fit" is very precise. Not to be hurried or rushed, maybe a bit meticulous for the impatient or weak of heart.
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Reviewed in the United States on April 2, 2025
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Verified Purchase
Albert Sacluti
Port Orchard, US
★★★★★ 5
Great item and Affordable
Style: BE-157H 1-Pack
Perfectly fit for my corolla
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 4, 2026

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