View 2 Photos View 0 Videos 2023 Paccar DX40 Front Differential for a Peterbilt 579 Contact for price PACCAR DX40 - Front Rear - Ratio - Pullout - DIFF ONLY, HOUSING SOLD SEPARATELY. ConditionUsedFits To Make(s)PETERBILTFits To Model(s)579Stock Number4469-4 MLS Number14350511CategoryDifferentials, Front Last Updated5/7/2026 LocationFresno, CA, US Sold ByGarabedian Equipment (855) 794-___ SHOWNUMBERCall Seller Email Seller Save More Info