View 2 Photos View 0 Videos Eaton-Fuller RTOF14915 Transmission for a 1990 Peterbilt 379 Contact for price (Used) 1989 Eaton/Fuller, TRANSMISSION ASSEMBLY- Model: RTOF14915, Serial Number: 70926180, Part Number: 3507561C91, Engine: Caterpillar 3406, For more information about this item, give us a... ConditionUsedEngine ModelCaterpillar 3406Fits To Make(s)PeterbiltFits To Model(s)379Will Fit Year(s)1990Part Number3507561C91Stock NumberP-79965 MLS Number12861958CategoryTransmissions Last Updated2/12/2026 LocationElkton, MD, US Sold ByCRG Heavy Truck Parts (844) 402-___ SHOWNUMBERCall Seller Email Seller Save More Info