If it's the nipple on the vac reservoir, the black bulb thing on the EGR, you should be able to glue it or JB weld. Just make sure the glue doesn't block the inside of the tube. If it's the hose, just clip of the split end and plug it back. Either way, I don't recommend a new EGR since it's not worth replacing an expensive part since it won't break your car if it fails either.