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Description
Diode Dynamics 4257 HP24 LED Bulb - Cool - White Switchback (Pair)FeaturesTrue 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. OverviewUpgrade. Add dual color functionality and a modern appearance to your front turn signals with the
FeaturesTrue 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.OverviewUpgrade. 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.Installation Instructions
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4.1 ★★★★★
Based on 24 reviews
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Product Reviews
★★★★★ 5
Excellent socks
Size: X-Large, Color: White
Awesome love them
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 24, 2026
★★★★★ 5
very comfortable
Size: Large, Color: White
very cushioning and good value. These are my favorite socks.
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Reviewed in the United States on December 13, 2025
★★★★★ 5
Finally, socks that fit and are comfortable
Size: X-Large, Color: White
I wear size 12.5 Wide shoes and have been through numerous "large" socks that shrink after the first wash and then are just too small. Local stores sell very few options in XL. Decided to give these a try and I'm glad I did. I like the height (just over the ankle joint) versus low cut or no-show, which tend to allow junk into the gaps.
I like the material. It's thinner on top nd doesn't have compression areas. It's not overly thick, so if you are looking for cushion or extra support, look elsewhere. I have the same sock in a no-show in gray, but they are size L and are just a little too small, so I knew ahead what I was in for construction-wise. Those have been plenty durable, so it checks all the boxes.
I'll be ordering some XLs in black and will keep on the lookout for gray.
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Reviewed in the United States on June 3, 2021
★★★★★ 5
Nice fit & holds shape
Size: Large, Color: White
Wear well. Hold up in use. Maintain a shape after multiple uses.
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Reviewed in the United States on November 20, 2025
★★★★★ 4
Great socks / a bit expensive
Size: Large, Color: Black
These may be the Goldilocks of the socks I've tried. They have nearly the same quality as the MUCH pricier Darn Tough Vertex Ultralight Cushion Cool Max socks (also reviewed). They have better quality, and a higher price, than a similar pair of PUMA socks (also reviewed).
Pros: Very well made, with no loose stitching, comfortable forefoot and heel cushioning, good ventilation via top mesh, good arch compression, minimal logos and mostly solid color.
Cons: Price is a bit on the high side, but better than the Darn Tough socks.
I could honestly have made a good case for any of these three (ASICS, PUMA, or Darn Tough), which explains their collective high ratings. I did the top 3 reviews first. When I get a chance, I'll go back and review the average and terrible :)
If money is no object, get the Darn Tough Vertex. If you're price sensitive, and willing to compromise a bit on quality, go with the PUMAs, which is what I did. Otherwise, these ASICS are near the same quality as the Darn Tough, but less expensive. Tough decisions :)
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Reviewed in the United States on May 9, 2017
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