3 0 Cummins N14 Rocker Arm for a 1994 Peterbilt 378 $125 USD GOOD USED ROCKER BOX HOUSING. TWO WITH ROCKERS($125 EA), ONE WITHOUT ROCKERS ($75), Serial#: 11728774, Core Charge: N/A, Casting#: 11728774 ConditionUsedFits To Make(s)PeterbiltFits To Model(s)378Will Fit Year(s)1994Part Number3076221Stock Number61218-36 MLS Number9761351CategoryRocker Arms Last Updated12/17/2023 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info