View 3 Photos View 0 Videos Dana-Spicer Front Differential Recently Updated Contact for price Good Condition Spicer Front Tandem Differential 4639 Ratio 3.90, Ratio: 3.9 ConditionUsedRear End3.90 ratioStock Number976394 MLS Number14113723CategoryDifferentials, Front Last Updated5/14/2026 LocationFarr West, UT, US Sold ByRocky Mountain Truck Parts (855) 980-___ SHOWNUMBERCall Seller Email Seller Save More Info