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Underground Lighting  |  SKU: F150-Rear-21

2021-24 Ford F150 Red Rear Brake/ Turn Signal LED Bulb W/ Built in Resistor No hyperflash (PAIR)

Regular price $69.99

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  • Direct replacement bulb for Rear Brake/Parking and turn signal on 2021-2024 Ford F150
  • Full metal heatsinking for reliable operation With a built in silent Fan to cool.
  • Canbus Nonpolar and CK compatible electrical design.
  • Plug and play, simple installation, no resistors needed.
  • 1600 lumens per bulb.
  • 1 Year Warranty

Description

Best Performance in Industry. 

Our Ultra Bright 27W 1600LM 4257 WT21 p27/7w RED LED W/ Built-in Resistors Brake/Parking and turn signal, No hyper flash (2 Pieces) are Red colored type LED lights that cover 360 degrees to provide maximum output. Unlike other brands, with resistors on both the filament, we created a CANBUS LED that only has a built-in resistor only on the turn signal filament. Having a resistor on both the filament will lead to melting the housing or the LED falling apart in the housing. We even took it one step future to insure the longevity of the bulbs by adding a cooling fan. The fan only turns on when the high filament is engaged, to reduce heat when resistor is on.  Our Design protects the LED from being exposed to constant heat eliminating this issue. This assures no hyper-flashing or error codes. Our LED is designed to replace the factory incandescent bulb without the need to add extra resistors or parts.

Best-In-Class Brightness. 

Each LED is equipped with 12 1860 LEDs RED Colored type LED lights 360 degrees to provide the max output. Each bulbs is 1200Lm, your turn signals will shine a lot brighter than the stock incandescent bulb.

You’ll be hard-pressed to find a brighter, more efficient LED bulb on the market! Designed here in the USA, these bulbs feature an impressive 12 red color LED chip design.

Installation

Difficulty Level: Beginner - Simple Installation for anyone.

Installation time is approximately 10 minutes. There is no need for slicing or complicated wiring. This light is a plug-n-play installation and operation. 

Please note: There are two bulbs in each taillight so you will want to buy two sets. Except for the STX models and the 2024 models only needs 1 set for brake 
 

    Frequently Asked Questions

    Frequently Asked Questions (FAQ)

    1) I am not sure of making an Online Purchase.

    Underground Lighting believes in customer comfort and total safety. You can make quick payments on the website without worrying about the security of your information. But, if you do not want to place an online order, do not worry. Simply call us on (718) 986-2146 and we will help you find the right product quickly.

    2) Can I make a Custom Order?

    Underground Lighting is dedicated to you. We believe in offering the exact car lighting products you require. Please call us on (718) 986-2146 or chat with us online to discuss your custom automotive lighting needs.

    3) How can I make a payment?

    There are many ways to make payment. You can use PayPal or credit cards from Visa, MasterCard, American Express, Discover and several other options to buy LED, HID bulbs and conversion kits from our website.

    4) When will my Order get shipped?

    Underground Lighting ships your products within 24 hours of the time of placing the order.

    5) When will the Products reach me?

    If you are in America, you will receive your order in 2-5 business days. If it is an international order, we have two options for you:

    USPS Priority Mail International – 6 to 10 business days

    USPS Priority Mail Express International – 3 to 5 business days

    6) Can I return the Product that I have ordered from you?

    We believe in total customer satisfaction. If you are not 100% satisfied with the product, you can return it for a refund within 30 days after you receive the product. If you want to return the entire order or part of it, please contact us immediately. For more information on returns, please visit: https://undergroundlighting.com/pages/shipping-return

    7) What is your Refunds Policy?

    Customers are responsible for all shipping costs for exchanged/returns items. We usually charge 15% restocking fee for products that you may want to return. For more information, please check: https://undergroundlighting.com/pages/shipping-return

    8) How do I claim Warranty?

    If you believe that an item is defective, please drop in a mail: undergroundlighting@gmail.com Use “warranty” in the subject and provide us your phone number along with a description of the problem. We will call you immediately and help you solve the issue. Please visit https://undergroundlighting.com/pages/warranty to know more.

    9) How to become a Dealer for Underground Lighting?

    Underground Lighting offers high quality products that stand tall against other LED and HID products in the market. If you want to enjoy incredible margins and amazing sales volume, submit a wholesale inquiry form with us.

    Warranty Information

    This product has a 1 year warranty

    Payment & Security

    Payment Methods

    • American Express
    • Apple Pay
    • 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.

    PRODUCT SPECS

    WHAT'S INCLUDED

    BULBS:
    2X RED Canbus LEDs With built in resistors
    WARRANTY:
    1 Year

    COMPATIBILITY

    CROSS-COMPATIBILITY:
    4257, p27/7w, WT21
    FITMENTS:
    ["Rear Turn Signal For 2021-2024 Ford F150"]
    CIRCUITS:
    12V
    BLINKER CIRCUITS:
    No Resistors Required

    TECH SPECS

    WATTAGE:
    24W
    LENGTH:
    2.13In/ 54MM
    DIAMETER:
    .81In/ 20.5MM
    INTENSITY:
    1200lm
    • Talk to a Specialist

      Call us (718) 986-2146

    • 30 Day Return Policy

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      On orders over $59.99

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      If placed before 2PM EST

    Customer Reviews

    Based on 87 reviews
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    (85)
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    M
    Manny
    Awesome

    These are better then expected!! Installed when sun was up and even in direct sunlight, they are very bright. (Light on Left)

    M
    Momotaka Saiyo
    2021-24 Ford F150 Red Rear Brake/ Turn Signal LED Bulb W/ Built in Resistor No hyperflash (PAIR)

    It is fantastic! I go it for my 2024 F150 XLT 303A pkg with one bulb on each tail light. Everything is as described. Easy installation. No slight delays in lighting reaction timing like other competing brands, No hyperflash as well. Now let's hope the bulbs are long lasting. Very satisfied so far.

    M
    Matt Thesing

    2021-24 Ford F150 Red Rear Brake/ Turn Signal LED Bulb W/ Built in Resistor No hyperflash (PAIR)

    P
    Peter B
    Better than expected

    They were an easy install. I was pleasantly surprised how much better the light was. I would buy again

    R
    Ram H
    2023 F150 STX 4x4 - Tail/Brake Light

    These LEDs do not disappoint! Tail light/brake light combo are definitely bright and will get anyone’s attention. No hyper flash, which is what I was looking for without adding an additional resistor. Will be ordering the full line up soon!

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