2004 one piece drum hub issue. Sorry, it's still around ...

[leebowman]

I have a 2004 hatchback with around 100k miles on it. Just wanted to pass along some info on this and that. It might even be useful ...

I have one drum that's worn oversize (over 201 mm). I might even replace both, since the bearings might be ready to go. The following might be useful to know which you have w/o looking, if its a 2004. I read on the AutoZone webpage that for the 2004, the transition to the split hub / drum came about after the following VIN number (last 8 digits, see below):

In the Autozone Repair Guides, this info is listed here:
| Repair Guides | Rear Drum Brakes | Brake Drums | AutoZone.com

And stating that VINs prior to xxxx xxxx x5B426447 have the combined one-piece unit. I've also seen the ACDelco p/n of 177-0455, but not sure of which that refers to.

A further indication for the early design is the code J41 listed on the glove box sticker. If JM4, it's the later design.

According to local GM dealers, the one-piece p/n is 96473234, with a list price of $ 211.10

But ... that p/n crosses in their system to the later hubless units with some retailers, CarQuest for one.

Points:

• The one piece unit weighs ~ 11 1/2 pounds, the hubless weighs ~ 8 pounds.
• The bearing hole measures 25 mm, but the AutoZone ad, which shows a picture of the original hub (bearings and bolts), but lists the opening as 52.6 mm, the actual size of the hubless one. The ad is on this forum, or Google autozone + 21104.
• Also, the AutoZone lists the weight as 9.99 pounds, which is closest to the hubbed one. But is it? ...

If I order one online, I'd hate to get the wrong one. Any thots?