Installs right front axle seal on 1994-2002 Dodge 1/2 & 3/4 ton trucks using Napa/SKF 16415 (formerly 16015), National 710241, or equivalent.  The seal is approximately 2-5/16" in diameter.
 
Please measure your seal first!  1/2 ton trucks usually have the smaller seal, but 3/4 & 1 ton trucks can go either way.