View 1 Photo View 0 Videos Caterpillar 420D Differential Recently Updated $6,600 USD DIFFERENTIAL FRONT, GOOD USED CONDITION , FROM 420D CAT BACKHOE . FITS TO MANY MODELS, Quantity2ConditionUsed MLS Number10222555CategoryDifferentials Last Updated3/17/2026 LocationUnion Gap, WA, US Sold ByDukes Equipment & Parts (844) 334-___ SHOWNUMBERCall Seller Email Seller Save More Info