help with a part number

[1black71rt]

I found a set of disc brake rotors at the swap meet in columbus ohio. The guy said they were for 71 to 73 dodge. the part # he gave me is 4086356. can someone tell if they will work for a 71 challenger? Thanks Joe

[Moparal]

They sure look thin and really super rusty to me.  I don't know the part number, but I sure wouldn't want them on my car stopping me behind a soccer mom dropping her cell phone on the floor

[1black71rt]

Hi moparal, The flash from the cam. made them look bad. The rust is just lite, some spots is clean metal. The guy told me they are new from mopar. 

[Topcat]

The parts search came up with this:

--------------------------------------------------------------------------------
4086356     71-73 Ply, Dge, Chryrotor brake 3683969
3683969     LATE 72, 73, ALL FULL SIZE EX IMProtor brake 4086356
4086356     71-73 Ply Dge ChryFRONT DISC BRAKE ROTOR U3683969
                   3 recognized part number(s)

[1black71rt]

How can you tell if the #'s on the rotor are the part # he gave me. The #'s on the rotor are not the same as the part # are they? 

[Topcat]

How can you tell if the #'s on the rotor are the part # he gave me. The #'s on the rotor are not the same as the part # are they? 

Recently, I was in the same situation. What I found out is in my situation (and likely the same for you) is that the casting no. and part no. will be different. There are few there that have the cross reference cast number to Chrysler p/n.

If you or anyone ever gets that list, I'd like to see it. What I did notice is that the Chrysler beginning number starting with either 2 will be earlier year p/n's. 3 will be 71 up part numbers. Not always true, but it did show a pattern.

[1black71rt]

Thank for your help topcat.