View 0 Photos View 0 Videos Eaton-Fuller RTLO20918B Chassis Control Module for a 2023 Peterbilt 389 $395 USD PETERBILT CHASSIS CONTROL MODULE PN#Q21-1142-001-001, Serial#: Q21-1142-001-001, Engine Make: Cummins, Engine Model: ISX/X15, Casting#: NA ConditionUsedEngine ModelCummins ISX/X15Fits To Make(s)PeterbiltFits To Model(s)389Will Fit Year(s)2023Part NumberQ21-1142-001-001, 50561AA, 900562/02R01S, 22298-0173, W3444F0Stock Number81426-15 MLS Number14614368CategoryChassis Control Modules Last Updated9/19/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info