I have a 2004 3500 srw QC cumminis 4x4 with an automatic i have to replace u joints fairly often.The dealership replaces them but i was wondering if anyone knows of after market one that might last longer.
Get some from NAPA like posted, and make sure you get the ones that need grease occasionally. Personally, I am not a fan of these lifetime lubricated u joints. Use a good, quality grease. I use Amsoil Series 2000 Racing Grease here in the shop for all drive line servicing. Look for a brand name joint, like Spicer. Those are the good ones. The cheap ones are, well, cheap.