View 0 Photos View 0 Videos 1979 John Deere 6531T Engine for a John Deere 644B Newly Listed $3,500 USD (USED) John Deere 6531T Warranty: As-Is No Warranty Assembly#: - Serial#: RGSB531861701 Horsepower: - ConditionUsedAssembly Number-Fits To Make(s)John DeereFits To Model(s)644BStock Number26067762 MLS Number14613895CategoryEngines Last Updated9/19/2026 LocationWinimac, IN, US Sold ByVander Haag's Inc. (855) 370-___ SHOWNUMBERCall Seller Email Seller Save More Info