3 0 Eaton DSP40/RS404 Cutoff for a 2005 Peterbilt 378 $5,995 USD USED TANDEM AXLE SUSPENSION CUTOFF SUSPENSION ASSEMBLY/ DSP40 /DS404/ WITH OR WITHOUT DIFFERENTIALS/ CAN RE RATIO, Axle Spline Count: 41, Serial#: NA, Core Charge: NA, Hub Bolts: 10 ConditionUsedFits To Make(s)PeterbiltFits To Model(s)378Will Fit Year(s)2005Part NumberAIR TRACStock Number101424-12 MLS Number13212636CategoryCutoffs Last Updated7/22/2025 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info