In short, no - at least, not a simple small plug-in like some other vendors have.

The closest Dell has is called Dell Support Center,  but in my opinion it is not worth installing a bloated program like that just to get driver updates.

Dell was supposed to have updated the site so that entering the service tag for your system limits options to what was installed, but it doesn't always work that way.  it doesn't work correctly for my desktop, for example - in my case the list is incomplete.

I just go with the Technical Updates subscription instead - the updates still probably won't be specific to your system, but at least it saves a trip to the web site.   Since I'm an "if it ain't broke, don't fix it" type when it comes to updates, it works out fairly well.

http://support.dell.com/support/topics/global.aspx/support/notifications/en/index?c=us&l=en&s=gen

Something to keep in mind, too - the older your PC, the less likely there will be updates for it.  Once a model goes out of production (or at least, out of the standard warranty),  updates are fairly rare.