My right rear spring support bracket has the shock attached to it. Mine has rusted to the point that the shock has broken through. There is very little rust on my frame and frame components but not so with the spring brackets. Has any of you gentlemen had this problem and what was involved in the fix?

I have not had that problem, but the only option I can think of is to weld in a new support bracket. You could fabricate your own or grind one out of a wreck and install that.

Prayed the axle with chassis saver.




My friend making it happen for me.


Bilstein 5100 shock that rusted through removed.






Yup? Torching near the gas tank. Shhhhh


Driver side removed. Because why not do both sides !


Passenger side removed. The side that rusted through.

Top mount on the round cross member is impossible to completely remove it unless removing the whole body which is a no no. The replacement part will have to be slightly modified and welded from bottom. How ever everything is basically ready for welding. Good tip on removing old weld. Is to cut into with a small wheel cut. Make sure to NOT CUT INTO THE FRAME. Then get out a air chisel and you'll be amazed how it will pop of the old weld/metal. And you'll be left with just little be of grinding to do. Grinding down a weld is very very hard vs regular steel. Thanks to my friend he took care of it.







Alright boys and girl. UPDATE

Primed and painted before the shock mounts gets welded. Because it will be impossible to reach some areas with a brush after the mounts are welded.



Test fit




Best believe it. It fits exactly in the same original spot. Only thing is we had to cut back the front part of the mount facing the front of the truck. The section that goes on top of the round cross member. But no big deal. My friend cut back the old mount as far as possible. And trimmed back the replacement one and it sits very nicely.





This was the hardest part to weld for my friend. The way the mount goes on the tube. It creates a big gap. The original mount is welded from too before the body goes on. But no big deal. He filled it in pretty solid.




The driver side.

Painted.




My goal after it's set up. To put grease or just fluid film that I have in a gallon, in the cracks or tight areas. This way it will keep water and moisture out. Anywhere there has been engine oil or geese on a car after a long period of times. There is just no rust.

you know what they say right? "A picture says a thousand words."

to answer your question, Toyota sells a replacement part. I don't remember the part # but mr. @TheDurk can you provide with them , as he did to me.

Is that a rubber drain plug in that picture? I'm wondering if removing that could let you access the upper shock bolt.

I Think it is a drain hole. But I dont think you will get much luck. Notice in other pics where the shock mounts vs the drain plug location

Kolelt, your detailed photo log of this repair and replace is amazing. Many thanks.

I turned down a otherwise clean '99 because of a broken rear top shock mount.

After seeing this, I'm glad i did.

Great job documenting this though!

I don't blame you. But if you don't clean and make the drain hole bigger. Eventually it will rust through no matter what. Mater, mud sits up there. Bad design by Toyota

When I swap my axle I plan to address the shock mounts. POR15, drill a bigger drain hole & oil, grease or fluid film on top of the mount & shock.

Damn right. Fluid film the crap out of the top. Take some gloves. Grab gallon of fluid film. Grab a hand full of the grease and just put it there.

I was bummed to find I have the exact same problem. Instead of getting junk yard cutouts I found the part numbers for factory replacements. From the diagram it looks like there are a lot of frame parts available for the 4Runner.

Toyota Part #'s for the coil and shock support bracket:

Passenger Side 5130135030
Drivers Side 5130235040

Dealership wanted $175, found them online for under $100.

Noticed the same here, both with the rear spring and shock mounts, but they are not all that bad (CA 3rd gen). I'm in the process of addressing now with Corroseal, after some initial prep...





Anyone know what these threaded holes are for?