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Old 01-26-2018, 01:58 PM
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Bumper mount frame horns.

Has anyone felt the need/desire to beef up the front frame horns?
The plate that the bumpers attach to.


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Old 05-05-2019, 01:52 AM   #2
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Old post bringing back up here don’t know the rules on that (new member here) but this is the closest thing I’ve found to my answer about my frame horns. I noticed when swapping my bumper my frame horns are slightly angled towards the ground. Hard to tell from your pic but it almost looks like yours are like that too which leads me to believe it’s normal. Are yours in fact angled towards the ground? Thanks!!!

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Old 05-05-2019, 05:03 AM   #3
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The horns are sort of angled towards the ground but the mounting plates of the bumper should be vertical but slightly angled to fit bumper shape.
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Old 05-05-2019, 07:43 AM   #4
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Alright gotcha, thanks, the bumper mounted up fine (other than the plastic in the middle protruding upwards), I just noticed that the frame horns (square mounting plates with the holes) weren’t completely straight on vertical so I wanted to make sure that they were suppose to be that way and there wasn’t frame damage from previous owner. This forum rocks!! Posted about this issue on a FB page I’m part of and no answer at all.
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Old 05-05-2019, 02:23 PM   #5
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When you say mounting plates for the bumper do you just mean the tow hooks cause mines just an OEM replacement for now. Thanks!
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Old 05-06-2019, 01:10 AM   #6
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This is the mounting plate:
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Old 05-06-2019, 01:17 AM   #7
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Just to be sure park your jeep on level surface (garage) ensure even tire pressure and then measure the distance from the horn to the ground on both sides. The chances that both frame horns are evenly bent are very small.
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Old 05-06-2019, 02:15 PM   #8
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Yeah they are even on both sides, what I was calling frame horns, you are calling mounting plates. The second picture of the original post are what mine look like. With the mounting plates slightly angled towards the ground.
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Old 05-08-2019, 07:17 PM   #9
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Alright for around to getting the bumper off again. The passenger side mounting plate is definitely angled more than the driver side doesn’t appear to be any creases in them like they have been hit. Would this be a normal variance? (Don’t hate on the pink level it has a magnet so it makes it easier to take pictures)
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Old 05-08-2019, 08:38 PM   #10
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It could be that it was pulled by the hooks from a mud trap.
Will measure mine and let you know.
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Old 05-08-2019, 08:47 PM   #11
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Alright sweet, thanks for the help!
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Old 05-08-2019, 09:09 PM   #12
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Measured with my iphone app- 2 degrees off vertical but the garage floor has 1 degree slope. So i would say "almost vertical".
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Old 05-08-2019, 09:13 PM   #13
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Okay so I would consider that about the same then to mine. I’m assuming that’s bumper on. Were both equal? Thanks so much!! Huge help!
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Old 05-08-2019, 09:35 PM   #14
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Yes bumper on, measured the inside surface of the bumper actually do to the bolts on the mounting plate. Both can be considered equal (1 degree difference)
You can check this size- its from repair manual 335.1 mm or 13.19 inches
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Old 05-08-2019, 09:48 PM   #15
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Alright sweet, yeah I’ll measure that too just to be sure. I’m not gonna worry about it then as long as my aftermarket bumper mounts up straight! Thanks again for all the help!
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Old 05-08-2019, 09:54 PM   #16
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You can use some washers on bottom bolts.
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Old 05-08-2019, 10:41 PM   #17
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Yeah if it won’t mount straight I’ll definitely do that!
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Old 05-09-2019, 08:03 PM   #18
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I ended up taking it to my local dealer collision shop while I was at the dealer today and they reported the welds and everything looked fine that it didn’t look like it had really been bent according to them looking at the welds. they also reported that 3mm of difference was within normal specs and that it could have came that way from welded from the factory.
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Old 05-10-2019, 02:08 AM   #19
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By the repair manual body gaps tolerances are 2mm witch is generous in my opinion.
Since the bumper doesn't have any "gaps" with the body 3mm sound reasonable tolerance..
If you noticed from the draw they don't even provide a reference dimension to the mounting plate.
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Old 05-11-2019, 03:53 AM   #20
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Yeah I noticed that when I was looking at the diagram! Thanks again. How’d you get the repair manual just out of curiosity? I poked around online and couldn’t find it.
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Old 05-11-2019, 04:12 AM   #21
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