4 0 Eaton-Fuller RTLO16913A Engine Control Module (ECM) for a 2014 Peterbilt 579 $850 USD Paccar Chassis Control Module (MUX3) For Sale P/N Q21-1077-3-103 - Used - May have some cosmetic blemishes (see photos). Give us a shout by phone, email, or text. We ship everywhere.,... ConditionUsedEngine ModelPaccar MX13Fits To Make(s)PeterbiltFits To Model(s)579Will Fit Year(s)2014Part NumberQ21-1077-3-103Stock NumberPT-0505-29 MLS Number9992664CategoryEngine Control Modules (ECM) Last Updated2/26/2025 LocationYork, ON, Canada Sold ByLomoca Inc. (833) 835-___ SHOWNUMBERCall Seller Email Seller Save More Info