Does anyone make an accurate reproduction of the 426 hemi oil dip stick tube covering? I recall the original was some sort of asbestos material as used on the positive battery cable.

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Not sure if this is what you're asking about or if the sell the covering separately?

http://www.hooverautoparts.com/products/Engine/M%20225.php

Moparts member xs29j8 has some NOS ones for sale, reach out to him.(Allen)

I had hoped the reproduction sources would have stepped up and done a better looking sheath, but as of this past summer the only reproduction offered is seen in first picture on the top as compared to an easily distinguished original on bottom.
Sheath weave is completely different on reproduction as are ends,( original on bottom picture )

Yes, I will try to contact him. I am looking for an original. Thank you

Thank... for those interested, I am almost out of the Heat Shield Sleeve and only sell them with a tube and bracket (clip)… $195 for the 3 NOS items.