New aftermarket front hubs don't have dust caps!
 

I'm replacing the front hubs on my 98 blazer and noticed the new ones don't have dust caps on the ends. My old dust caps are too big to fit. Is this ok? Do I need to go find some to fit? Thanks for any advice. You guys are great!

- Matt

They should be a sealed unit and doesn't require them

I'm assuming you're working on a 2WD. Wherever you bought the hubs should have caps I hope, otherwise you'll lose the grease when it gets warm and have one heck of s mess.

It is a 2wd, but what I have is a sealed unit like neo said. i have a dust cap on the original one, but the new ones didn't come with one and the old one is too big to fit. Guess I could RTV the old one on but I'm not sure it would make a difference.

I don't know the sizes your working with but try measuring the hub for the size you need. If they made it small enough maybe you can use a trailer one?