*shrug* I imagine they're just fine. Prothane is just a brand. IMO, a sway bar bushings is pretty much a sway bar bushing. As long as it's poly and you grease the frame bushings before install, you should be just fine.

 

What do you mean by "grease the frame bushings"? Any special type of grease? Sorry for all the questions. Thanks!

 

Ford silicone grease D7AZ-19A331-A or something similar. Of course, it's even better if you wrap the bar with teflon tape and slide the bushing over it.

 

It's not as accurate as calipers (I use), but in a jiffy you can take an open end set of wrenches, slide them over the bar. The smallest size of wrench that fits over the bar is the size you have (not precisely accurate for small fractional differences)

 

check my post above circumference=pi*d (not 2*r), you're maths are a bit rusty ;-)

 

I had the "red" prothane ones from NPD, returned them because they didn't have my size. BUT the ones from NPD come with a little tube of special grease for them specifically. So no need to worry about looking for it.

 

Thanks Ed. I'm heading to school now, so I will pick them up when I get out of class.

 

Calipers? Pi? ?? Grab a couple of wrenches - 3/4, 7/8, 15/16, and 1 inch. The smallest wrench you can slip the open end over the bar and that's the size it is. Why else did they stamp those numbers on wrenches if they weren't meant for measuring stuff? Even a crescent wrench will work but you still need a ruler to verify it.

 

Sway bar bushings are notorious for squeaking. Poly bushings are not as flexible as the natural rubber ones originally installed in cars in the 60s (but they last longer).

CP