Neapco 6.5-4-3551-1X — Cross Reference & Replacement
Neapco 6.5-4-3551-1X cross-references to the Spicer 6.5-4-3551-1X, which we stock and ship nationwide. Interchange numbers identify parts built to the same specification — verify fitment for your truck before ordering.
Interchange data researched from manufacturer and distributor catalogs.