Originally Posted by Tango
You'll find Cummins with a dozen or so different mounts because they are speced by the chassis builder. Supposedly the best are Lord fluid mounts but they are crazy expensive, hard to find and tend to wear pretty quickly. Others are solid but transmit more vibes. Depending on what you started with, most can be found at any big auto parts store for a fraction of the "OEM" price. The hardest part is that these days, auto countermen don't know squat about auto parts. Back in the day, you could walk in with just about any component and the guys would recognize the make, model and year as well as know a half dozen crossovers that would work. Not any more. If you don't have a VIN number to look up on a computer...they are totally lost.
Sad but this is getting truer everyday, I needed front calipers for my 70 Ford motorhome, Auto zone, O reillys, carQuest , Napa told me Ford never made motorhome chassis in 1970 because it wasn't in the computer, I went down to the Napa here in town because I know that one of the parts counter girls used to work at another parts house next town over & has been in the business 30 yrs, told her what I had & believe it or not SHE PULLED OUT A BOOK!!!!!!. an old book at that
but in just a few minutes had a part number & it was on order. Had to return 3 hrs later to pick them up ut I had it.