That Mahle part is not for a smallblock Mopar. Kinda looks like it comes out of a mercedes engine.
Go on Rock Auto look at the timing components for a 3.9 V6, there it is.

You disbelievers are within your rights, but when I overhauled my Mercedes 6 which sees 6500 rpm on occasion and has a timing chain about five feet long, I found two of the chain tensioners. One was actually just a guide around a corner, the other "banana rail" was hydraulically loaded against the chain and I could have reused it, it was still in decent shape. And I found no trace of any plastic on the oil pump intake screen.

R.