View 2 Photos View 0 Videos Dana D40-155 Rear Differential for a 2021 Kenworth T680 $1,995 USD D40-155 RR 2.79 WILL INSPECT IN OUR GEAR SHOP, 90 DAY WARRANTY, Axle Spline Count: 41, Ratio: 2.79 ConditionUsedRear End2.79 ratioFits To Make(s)KenworthFits To Model(s)T680Will Fit Year(s)2021Part NumberD40-155 REARStock Number70122-4 MLS Number13458337CategoryDifferentials, Rear Last Updated5/15/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info