Associated/Interchange Parts

Additional Information

R&P 3.91 FRONT N400
HD Differential > Ring and Pinion > 3.91 Ratio > R&P 3.91 FRONT N400

INTERCHANGES:
REPLACES Navistar: 1665340C91
REPLACES Spicer: 401KG105X
REPLACES PAI: 497030
REPLACES S&S Truck Parts: S-A348
 

We ship from several national distribution centers through UPS and LTL truck services.  Most orders will ship out on the same day as ordered (by 3pm Central Time - except weekends and holidays).

Orders are delivered in 5 business days or less, with most delivered in 1-2 business days (ground service time estimates are not guaranteed).  Time sensitive and guaranteed expedited shipping options, when available, are easily displayed in your shopping cart after you enter parts and destination zip code.

Catalog