You would throw it away and replace it with a new one. The problem is that bacteria can collect in the crack and there are probably some other problems with it as well.
If it's cracked, it might be made of fiberglass, or plastic. Fiberglass patch or two part epoxy.
To fix cracked clay, you can gently moisten the clay with water and then carefully press the cracked pieces back together. Allow the clay to dry completely before handling it again.
If you mean the plastic overflow tank, replace it. If you mean the plastic tanks on either side of the radiator core, replace the radiator.
To fix cracked air dry clay, you can try moistening the cracked area with water and gently smoothing it out with your fingers or a damp sponge. Allow the clay to dry completely before painting or decorating it.
you can heat the cracked area to a plastic state with a blow torch or get it refunded
If you mean the physical plastic credit card is cracked, you can use super glue or clear adhesive tape to fix it. However, it will be difficult to swipe it because the magnetic tape might have been damaged. I suggest that if you have a cracked credit card, bring it to the issuing company and have it replaced for a new card. That's what I did when my credit card was accidentally cracked; I had a replacement.
how to fix cracks in patent leather
you cant fix it, you need to replace it.
carburettor prices vary with different carburettors.but you cannot fix a cracked carb.u need to replace the carburettor
You can't fix a cracked head unless you can weld. it must be replaced with a new head.
Blown head gasket if you're lucky. Cracked block if you're not. Fix it quick.
To fix cracked or dried out air dry clay, you can try moistening it with water or a mixture of water and glue, then kneading it until it becomes pliable again. You can also try wrapping the clay in a damp cloth and letting it sit for a few hours to absorb moisture.