Leaking coolant, what is this part called?

[miller87]

I have a '98 Chevy Tahoe with the 5.7 and I recently topped off my coolant (haven't had the truck long). Noticed a small puddle of coolant leaking when I got back in the truck at the grocery store today and it's leaking from a rubber stub/boot directly underneath the radiator cap. I have a picture attached. The rubber is cracked and I can see the coolant drip out of it. Is this something a local auto store would carry? And hopefully cheap?

I need this truck to drive 5 hours out of town tmrw

Thanks for any help in advance.

 

[lesterl]

Thats just a rubber cap for the radiator, it has been replaced at sometime and this part# had capability of some other option.... Just find another rubber cap and reclamp it.

 

[samotahoe]

those things will irritate you, they do need to be replaced often due to wheathering