I've had mine since March 2006 and they cover the whole seat back for the front and, for the back seats, everything other than the tie down/LATCH spots. I have a 2 year old, a newborn, a teenager, a beagle, and 2 cats, I've moved a couple of times, and I've had a Lab puppy that got car sick everytime he rode in the Jeep and even occasionally he would piss on the back seats

and they still look like new. My wife and I think that these are the best purchase we've made so far for the Jeep. I no longer have the part number but they are for a 2004 KJ Sport.