Memorial Day Sale: 10% Off Your Entire Order With Code MEMDAY22 Details »
store image

7440/7443 CK LED Bulb - Dual Function 27 SMD Tower - Wedge Base

Part Number: 7443-x27-T-CK-CAR
Select Color Options:
Cool 6500K
Natural 4000K
Select Pack:
In Stock
Starting at $14.95 ea.
Volume price as low as $13.45
Orders Ship Today!  8 Hours and 43 Minutes remaining
  • Select options to see various notes.

Save 10% On Your Entire Order using code MEMDAY22 Details »

Promo code can not be combined with any other promo codes or discounts. Only valid on orders placed between May 23rd 2022 and May 30th 2022.

Frequently Bought Together


CK-wired LED replacement bulbs can fit SRCK- and SACK-compatible vehicle tail lights, brake lights, reverse lights, turn signals, or side marker lights. This dual-contact, dual-function 7443 bulb emits a 360° viewing angle for better, allover light emission with reduced hot spots. Tower-style design with a 16-mm wedge base for easy plug-and-play installation. The energy-efficient bulb operates within a wide 9-14.8 VDC range and is designed to last 25 times longer than incandescent bulbs on your car, truck, SUV, or van. CK bulbs contain both grounds on the same side of the wedge. Use a ground tester or contact your dealer to see if your vehicle has CK light sockets. Available in cool white, natural white, amber, and red. Not sold in pairs. Price per bulb.

3 Years
Super Bright LEDs, Inc. offers a 3-year warranty to protect against manufacturer defects and malfunctions. If you experience failure of an LED or other component not caused by negligence, abuse, unauthorized repair or disassembly, we will replace the product within the warranty period. If the same product is no longer available, a product of equal value may be substituted. Read More
  • Turn Lights
  • Side Marker Lights
  • Tail Lights
  • Reverse Lights
  • Brake Lights


Swipe left to see additional specifications
Part NOCCT / Wavelength
Current Draw @ Operating Voltage
Price Ea.Product WeightConstant Current
-7443-R27-T-CK633 nm11/36 lm0.07/0.22A$14.95--
-7443-NW27-T-CK4000 K90/290 lm0.08/0.25A$14.95--
-7443-CW27-T-CK6500 K90/290 lm0.08/0.25A$14.95--
-7443-A27-T-CK597 nm80/235 lm0.08/0.25A$14.95--
-7443-R27-T-CK-2PK633 nm11/36 lm0.07/0.22A$29.90--
-7443-NW27-T-CK-2PK4000 K90/290 lm0.08/0.25A$29.90--
-7443-CW27-T-CK-2PK6500 K90/290 lm0.08/0.25A$29.90--
-7443-A27-T-CK-2PK597 nm80/235 lm0.08/0.25A$29.90--
Single VS Dual VS CK Dual Filament
Single Filament, Dual Filament, and CK Dual Filament
  • When looking for a replacement bulb, the way the socket is wired determines the part number of the replacement bulb. Sockets that are used for a single intensity call for 3156 or 7440 bulbs (single filament), while sockets that have a dual intensity call for 3157 or 7443 bulbs (dual filament). Dual filament bulbs will function properly in a single intensity socket. So a 3157 bulb will work in a 3156 socket and a 7443 will work in a 7440 socket. However, single filament bulbs will not function in a dual intensity socket. CK indicates where the socket's positive and negative terminals are located. CK LED bulbs are very versatile and can be used in any application a CK or non-CK bulb is used.
7443-x27-T-CK-CAR - 7440/7443 CK LED Bulb - Dual Function 27 SMD Tower - Wedge Retrofit
7443 LED Bulb - Dual Function 27 SMD LED Tower - Wedge Retrofit



Overall Rating

Total Reviews


Tell Us What You Think

Share your own experience and photos of this product. Doing so will help inform other potential buyers and allow us improve our product lines. It may take up to 72 hours for your review to appear.

Sign In Required to Write a Review
Click here to sign in to your account
Technical Level
Part Number
Reviewed On

2002 Mazda Miata NB Brake Lights

Make sure that when you are ordering brake lights for a NB Miata you get this bulb and not the standard 7443. NB Miatas have a CK socket and need this model for them to function properly.

Bulbs work and look great!

Helpful? Yes (11) No (0)

Technical Level
Part Number
Reviewed On

Needs resistors for Miata with cruise control

You will need load resistors when installing these in an NB miata with cruise control, otherwise your cruise control module will not function properly.

Helpful? Yes (11) No (1)

Frank M.
Technical Level
Part Number
Reviewed On

Larger base

The base of this bulb was slightly larger than the bulb it replaced. The bayonet style base just barely wedged into the existing socket on my 2015 Silverado. However, the bulb's contacts still connected and the light works. I am somewhat worried that over time the bulb may pop out. But for now, the bulb is bright and functioning.

Helpful? Yes (10) No (1)

Technical Level
Part Number
Reviewed On


I thought these would be a lot brighter than my poem, filament brake lights. Instead, it turns out that the oems are much brighter....WTH. I am returning them and ordering one up from these to see if that helps. I live in an area where there are a lot of drivers that like to ride your tail. Maybe the new ones will send the proper message.

Helpful? Yes (7) No (2)

Technical Level
Part Number
Reviewed On


I put these leds in all 4 turn signals on my 2014 Yamaha r1 and these leds LIGHT THIS THING UP 😀. Excellent. Easy installation

Helpful? Yes (3) No (0)

Send us your Feedback