Cracked Plastic Radiator Tank

[cknadroj]

Hi:

Just like my 93 K1500 did last year, my 95 Suburban's radiator has cracked vertically about 4 inches long in the middle on the front of the driver's side plastic tank behind where the upper hose comes in.

A new aftermarket 34" radiator is nearly $250. We only use the Suburban for pulling a horse trailer twice a week.

Has anyone had any luck J-B Welding or otherwise patching cracks like this?

Thanks for you opinion...

[Tall]

Hrm, I don’t think JB weld would be a good permanent solution, if your using the engine for pulling you need the cooling system in decent shape or you will end up on the side of the road waiting for a tow truck. Honestly, their isn’t really a decent way to fix plastic parts, best thing to do would be buy a new one.

[goinbig]

Are you talking about the plastis over-flow tank, or the radiator itself?

If you mean the radiator...buy a metal one!!!!

[broughy84]

get some plumbers stick epoxy. It will fix anything. Email me and I can probably send you some, mix it and clean the area real good then apply it. I can get you instructions too.

[email protected]

Hi, I also have that problem, except that the crack is around the tube that oil goes through. It cracked just around the bolt that holds the tube to the radiator. You suggested using epoxy. Are you sure that will work? I tried soldering it, but it doesnt melt, it becomes a sort of powder instead of melting.