6 0 Used Peterbilt 579 Coolant Reservoir Filler Neck with Thread On Cap Only (no reservoir) $55 USD Used 579 Coolant Reservoir Filler Neck with Thread On Cap Only (no reservoir), Material: Composite ConditionUsedFits To Make(s)PeterbiltFits To Model(s)579Will Fit Year(s)2022 & UpPart NumberF861049Stock Number619-11764 MLS Number12684987CategoryCoolant Reservoirs Last Updated5/10/2025 LocationDorr, MI, US Sold ByFrontier Truck Parts (855) 300-___ SHOWNUMBERCall Seller Email Seller Save More Info