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C4 Automatic to 6AN X 1/8 NPS Cooler Line Fittings (pair), 73-77 Ford Bronco SKU: 8416

C4 Automatic to 6AN X 1/8 NPS Cooler Line Fittings (pair), 73-77 Ford Bronco

C4 Automatic to 6AN X 1/8 NPS Cooler Line Fittings (pair), 73-77 Ford Bronco

Purchase C4 Automatic to 6AN X 1/8 NPS Cooler Line Fittings (pair), 73-77 Ford Bronco
$21.99 SKU: 8416

Fits 73-77 Ford Bronco
7 Reviews

Product Overview:

If you're running a C4 automatic in your Early Bronco, these Cooler Line Fittings adapt the stock 1/8" NPS o-ring fittings to allow for use of custom 6AN hoses. These are the smart choice for anyone wanting modern hose compatibility, reliable sealing, and a clean custom install. Made just for WH, and designed to make your life easier.

Full description

If you're running a C4 automatic in your Early Bronco, these Cooler Line Fittings adapt the stock 1/8" NPS o-ring fittings to allow for use of custom 6AN hoses. These are the smart choice for anyone wanting modern hose compatibility, reliable sealing, and a clean custom install. Made just for WH, and designed to make your life easier.


C4 Automatic Cooler Line Fittings for Custom 6AN Hoses

If you're upgrading your transmission cooler lines on a C4 automatic, this is the clean, high-tech solution you’ve been looking for. Custom-made exclusively for WILD HORSES, these C4 NPS o-ring fittings adapt your stock 1/8" NPS transmission cooler ports to work seamlessly with modern 6AN hose ends.

No more cobbled-together adapters or questionable sealing methods—these fittings deliver a tight, leak-free seal and make building a custom AN cooler line setup simple and reliable. Whether you're running a high-performance build or just want cleaner lines and better fittings, this pair of adapters gets it done right.


  • Designed for C4 automatic transmission: Adapts stock 1/8" NPS cooler ports

  • Custom-made for WILD HORSES: Hard-to-find fitment made easy and reliable

  • Converts to 6AN fittings: Allows use of braided AN6 hoses for custom cooler setups

  • Includes o-ring sealing: Ensures a leak-free connection at the transmission

  • Sold as a pair: One kit covers both transmission cooler ports

  • Ideal for custom builds: Cleaner, more secure alternative to hard lines or barbs


Built specifically for the 1/8" NPS ports on a Early Bronco C4 automatic, these custom cooler line fittings adapt to eliminate guesswork for custom 6AN hoses.

Review C4 Automatic to 6AN X 1/8 NPS Cooler Line Fittings (pair), 73-77 Ford Bronco

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Questions & Answers
PRODUCT REVIEWS
Phil Benson
Reviewed 08/08/2023
Arrived in the mail today quickly. Thank you for offering a product that is nearly impossible to find.

Landon Winslow
Reviewed 04/22/2023
Perfect fit for our C4. We have an external oil cooler and this allowed us to use AN hoses to simplify everything

Michael Kresin
Reviewed 11/26/2022
They worked great for allowing me to run soft cooler lines on my C4

Joseph McMurray
Reviewed 06/08/2021
Got them in a timely manner,exact fit ,great quality

Marcos Ramirez
Reviewed 11/26/2019
I guess I typed the wrong number when placing my credit card info and the gentleman called me back right away to try to get the right info in order to process it as quickly as possible. I received the package very fast and the product was exactly as described and worked out perfectly. Great job team

Earl F Attix
Reviewed 07/22/2019
excellent product, just what you need to plumb 6an cooling lines to your C4 Transmission

Brett sokolowski
Reviewed 02/28/2019
Fittings fit and look great, easy to install.


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