Fits 21214/2131/2123 Chevy NIVA (with/without ABS) produced after year 2004.
For installing on 2004-2009 years 21214 or 2131 you'd need extra 2 ball-joints 2123 (we can supply you).
Benefits:
Long-life comparing to original hubs.
Doesn't require any adjustment.
Double dirt/dust/water protection/
Some fuel economy.
Better steering.
Less noise from transmission.