Thanks for your interest in our parts and I apologize for any trouble. The MMRAD-F2D-03 was an earlier version of the 6.0L radiator designed to be a more direct replacement for the factory unit that replaced the plastic end tanks with durable aluminum to help with longevity and heat dissipation. Since their initial release, we received feedback from drivers like many of you looking for higher performance options, which is where we developed the MMRAD-F2D-60, which features larger tanks and a thicker core for better cooling. The F2D-03 is no longer available directly from us, but we do still have plenty of drivers running it with no trouble, and they are still covered under our Lifetime Warranty for manufacturing defects.
If you have any questions or issues with either version of the 6.0L radiator or any of our other parts, feel free to reach out to our customer service team and we'll be happy to assist.
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