Speed Adjust buckle broken - Replaceable, still safe?

I took a ~15 foot fall while soloing in my gym yesterday. The sliding buckle on my harness has a huge, very obvious crack in it now. The crack goes all the way through the plastic. It can still slide and adjust. I'm not too worried, as i have a pretty snazzy misty cadillac waiting in tow, however I'm curious as to if the buckle is replaceable, or if i should just ditch the harness.

Thanks in advance for your help and informative responses.
~Caeden

What kind of harness is it? I don't think I've ever seen a climbing harness with a plastic buckle. That sounds unsafe to begin with.

Replacing the buckle is going to necessarily involve resewing some of the nylon, no?

If it is in fact BD, I bet they would repair it for you if you sent it to them, if you want to go the repair route.

It's Black Diamonds lower-end harness. That red thing. I'm definitely leaning towards retiring it.
@Patrick: I haven't looked at it too closely for a repair, but i would imagine it might be a pain. Good idea on sending it into Black Diamond.

I'll probably just make it a lender for top roping friends, or retire it.

I'd say it's a warranty issue. It's BD's fault for using plastic on a harness. Send it in and request warranty service.

Guessing if its plastic it probably isn't needed for safety but would have to see pics. I agree that bd would probably fix it. They do seem to stand behind their stuff.