Can you have a radiator crack welded?

Answer 1

Yes, it can be welded, depending on the location of the crack.

Some radiators are repairablbe, depending on the construction of the radiator. Older style all-brass/copper radiators can be soldered (not welded) if the leak area is accessible and the surrounding metal is strong enough. Some newer style plastic tank/aluminum core radiators can be repaired if the leak is at the joint between the tank(s) and the core, while others cannot. The plastic tanks themselves and the aluminum cores cannot be reliably repaired.