SKU: 46542223970

Diode Dynamics 31mm SMF2 LED Warm White (pair)

Sale price$10.75 Regular price$11.95
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Ships within 48 hours · Estimated delivery Oct 29 - Nov 3

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Description

Diode Dynamics 31mm SMF2 LED Warm White (pair)Features Direct replacement for factory 31mm festoon bulb Adds more modern LED appearance Plug and play simple installation Overview Design. The 31mm SMF2 LED bulb is a direct replacement for any 31mm size bulb commonly found in vanity mirror lights in many vehicles. Populated with two 5050 size SMDs the SMF2 upgrades the factory yellowish incandescent bulb to a more modern LED appearance while adding far more total light output than the factory bulb.

Features

  • Direct replacement for factory 31mm festoon bulb
  • Adds more modern LED appearance
  • Plug and play simple installation

Overview

Design. The 31mm SMF2 LED bulb is a direct replacement for any 31mm-size bulb commonly found in vanity mirror lights in many vehicles. Populated with two 5050-size SMDs the SMF2 upgrades the factory yellowish incandescent bulb to a more modern LED appearance while adding far more total light output than the factory bulb. The SMF2 was designed with an embedded load resistor and implanted diode for superior reliability. With its durable metal terminals it will fit snugly in the socket and its light weight means it won't vibrate loose over time.

Reliability. Unlike other bulbs on the market this bulb is built with constant-current circuitry along with transient suppression. That means this bulb will last for years not months with no flickering or failure. And like every Diode Dynamics product it's backed by an industry-leading three-year replacement warranty.

Brightness. With 24 lumens of true measured output the SMF2 LED will provide about double the total light compared to your original 31mm-sized 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.

Colors. In addition to vibrant colors of blue red amber and green the SMF2 is available in a cool white 6000K and warm white 3000K option as well. Whether you want a modern cool white appearance or a traditional warm white color we have the color to fit your need!

Direct replacement for your factory bulb

Included Quantity: Two (2)

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: 46542223970

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4.3 ★★★★★
Based on 21 reviews
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A
Verified Purchase
A.N. Libby
Dallas, US
★★★★★ 3
Love it but it stains
Color: Haze Blue, Size: 2 Pack Standard(20"X 26")
I love these but had to knock some stars down for a single reason. They are soft, the material is somehow both substantial and airy at the same time, and a smooth, silky (not satin), cozy texture. The color was exactly as pictured. The envelope style works great to keep my pillows covered. The fabric lays perfectly. I love sleeping on this pillow case. Took two stars off because every single atom of oil on my face stained it immediately and won't come out in the wash. Its not subtle. You can see anywhere my face has been, forever. I don't have some incredibly oily face or hair, I've never had this happen to another pillow case in my life.
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Reviewed in the United States on April 20, 2026
M
Verified Purchase
Michael
Houston, US
★★★★★ 5
Good buy
Color: Navy Blue, Size: Body(20"X 54")
Nice and soft , well packaged and looks good. Kinda pillowcase you find in a luxury hotel
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Reviewed in the United States on May 1, 2026
C
Verified Purchase
CJHenry
West Palm Beach, US
★★★★★ 5
Silky and Soothing
Color: Cream, Size: 2 Pack Queen(20"X 30")
I thought I was getting 1 of the queen sized but I got 2. I got these for my Pomeranian's fuzzy pillow. He's always hot and these are very cooling and very good quality. He loves them and are very comfortable for him. They totally transformed his shaggy old pillow. I used the larger body pillow covers to replace the covers I had. They matched my bedspread perfectly. I use 2 body pillows along the exterior wall in my bedroom where there is cold coming through the floor in the winter. I'm sure I will enjoy them in the summer when it's hot too!
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Reviewed in the United States on January 10, 2026
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Verified Purchase
Nicole Hoelting
Lake Worth, US
★★★★★ 5
Finally sleeping through the night without waking up drenched
I was dealing with night sweats almost every night. Waking up overheated, flipping my pillow over constantly, just uncomfortable and restless. It was starting to mess with my sleep in a real way. Since switching to this cooling pillowcase (and pairing it with a cooling blanket), it’s been a completely different experience. I’m actually staying cool through the night and not waking up soaked or irritated. The fabric feels cool to the touch right away and doesn’t trap heat like a regular pillowcase. It’s smooth, comfortable, and still feels good after washing. Not stiff or weird like some “cooling” materials can be. Is it magic? No. But does it noticeably reduce overheating and help you sleep better? Absolutely. If you run hot at night or deal with night sweats, this is one of those small upgrades that makes a big difference. I wish I had bought it sooner.
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Reviewed in the United States on March 19, 2026
A
Verified Purchase
Amazing Sally
Pawtucket, US
★★★★★ 5
so far so good
I was surprised at this pair of pillow cases only because the material seemed impossible to be cooling - it's that weird polyester blend. So far I have not awoken feeling sweaty around my face and scalp. I don't recall what I originally paid but I think it is great value for money! If you are sensitive to out of the box smell, I washed mine first and it didn't impede on the efficacy of the cooling!
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Reviewed in the United States on April 28, 2026

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