If you have a 14 bolt, you need these seals!  The original factory seals for the 14 bolt rely on the spindle to be perfect to properly seal.  Given the age of the axles, this is rarely the case and gear oil leaks on your new brakes and possibly your mother-in-laws driveway.   Save yourself the headaches and get these.  Fits all GM 14 bolt full floating axles, 1973 to 1998.  SOLD AS A PAIR (2 seals to do one axle) All our refurbished axles get these upgraded seals to prevent leaks.