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  • 12.000" Wide Extruded Aluminum Heatsink
  • 12.000" Wide Extruded Aluminum Heatsink
  • 12.000" Wide Extruded Aluminum Heatsink
  • 12.000" Wide Extruded Aluminum Heatsink

    • 12.000" Wide Extruded Aluminum Heatsink

    $8.56 - $642.00
    (13 reviews) Write a Review
    SKU:
    12
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    Product Description

    Quality extruded aluminum heatsink
    Alloy:  6063-T6
    Width is 12.000"
    Fin Height is 1"
    Base Height is .300"
    Weight is approximately .60 lbs per inch
    C/W/3": approximately .85

     

    All of our heatsink extrusions are sold by the inch.  To order a more specific length, for example a length of 5.5", you would choose 6" and type "Please cut to 5.5 inches" in the "Specific cut length" field above.  If you have any questions, please give us a call or send us an email, we would be happy to assist you.

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    13 Reviews Hide Reviews Show Reviews

    • 5
      Really solid heatsink!

      Posted by Dave on 5th Sep 2025

      It says how big it is in the description, but to have one in my hand to see for myself...It's massive. Just what I needed for my project.

    • 5
      Great Service

      Posted by Cheryl Anna Stegall-Blevins on 22nd Nov 2024

      Easy ordering process; excellent delivery.

    • 5
      Heatsink Cutting to Size Requested

      Posted by Scott Parker on 18th Jun 2024

      I requested my order of (8) Heatsinks to all be cut to a specific length, expecting a large +/-, but was very pleased when I measured them to find the cuts to EXTREMELY accurate! Many thanks to those running the machine shop for orders, my work has been greatly reduced for an additional process for production.

    • 5
      12" heatsink

      Posted by Lee Borgea on 26th Feb 2024

      Excellent quality and perfect for my needs, fast delivery and very competitive price. Made in USA - So Yay, something I can buy that is made here and support our industry.

    • 1
      heat sink deficiencies

      Posted by Rob Richardson on 8th Apr 2023

      All 4 of the heatsinks were warped, not flat, by over 1/8" and not going to be useable for my project.

    • 5
      12" Wide Aluminum Heatsink

      Posted by Ryan on 29th May 2022

      Using this to cool two ESC for a electric off-road bike. Price was very good compared to anywhere else. Very high quality heat sink with a nice base width for drilling/tapping. Super happy with purchase and would recommend. Comes with "warning sharp edges" label - they do mean it. Be careful!

    • 5
      Heat Sinks

      Posted by Jeffrey Beckman on 20th Sep 2021

      Very pleased with product, well built and most importantly very reasonable price. I will continue to purchase all of my heat sink needs exclusively from HeatsinkUSA. Sincerely Jeffrey Beckman Aradia HiFi LLC USA

    • 5
      12.000" WIDE EXTRUDED ALUMINUM HEATSINK

      Posted by Barry Watkins on 19th Apr 2019

      Fit and finish was great. We will be ordering from them again. Good quality at a good price.

    • 4
      heat sink

      Posted by Robert Reed on 30th Aug 2018

      Looks like a quality product. I would give a 5 star, but have not put it into service yet. I especially like the C/W dissipation rating that you give on each product.