291AB Crank Pulley. Service replacement.
 

L78, L72, deep groove crank pulley. 3955291 AB. Service replacement GM pulley. Character fonts are slightly different from original, however, this is a true 2 piece spot welded GM pulley. Weighs 2.3 pounds. Reproductions are much lighter and are of poor quality. <span style="font-weight: bold">SOLD SOLD SOLD SOLD</span>
-Matt