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I was puttting running boards on my 2012 big horn c/c 4x4 and there are 2 "donuts" about 3" around and 2" deep bolted back to back on a bracket on the frame rail about midway under the cab. They are rust colored and rough surfaced. I noticed some on the bed or body mounts also I think . What are these and why are they mounted by themselves on the frame?

Just really wondering what they are.:4-dontknow:

thanks applebutter
 

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I noticed the same thing and was wondering what they are for. hopefully someone will answer this thread ive got a couple guys i work with that are also wondering.
 

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They are counterweights, designed to reduce NVH-Noise, Vibration and Harshness. Dodge went to ALOT of meticulous trouble to make the 4thg gen ram as smooth as possible.
 

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They are thing-a-ma-jigs that are supposed to be there...I think. LOL
 

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Thanks for the answer! Also, thank you so much for your service to this country. I salute you sir!


They are counterweights, designed to reduce NVH-Noise, Vibration and Harshness. Dodge went to ALOT of meticulous trouble to make the 4thg gen ram as smooth as possible.
 

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ArmyOfOne got it, they are to reduce harmonic vibrations through the chassis....had 'em on my Xterra, took 'em off and it was actually a noticeable difference
 

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Sometimes you will also find them hanging on your exhaust, mostly on the 2500 & 3500 models

Those people who FEEL a movement with the brake or gas pedal, may find that IF they had those weights/vibration dampners, the FEELING may go away



 
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