Route 6 Equipment Parts, Inc. GET THE RIGHT PARTS THE FIRST TIME!! John Deere 4024TF270 Diesel Engine Cylinder Head # Marked – R502577 # – RE506335 USED HEAD, MAY NEED WORK, NO APPARENT CRACKS, UNTESTED AS IS Fits: Wheel Loader 244J Skid Steers 313, 315, 317, 320 Tractor 4120, and More! Terms & Conditions of Sale. All parts guaranteed to be in useable condition unless otherwise noted. NO EXCEPTIONS WITHOUT VALID PROOF OF EXEMPTION. Route 6 Equipment Parts will not be responsible for any issues resulting from failure to confirm fit or finish before ordering. LOOKING FOR COMPLETE ENGINES & EQUIPMENT?? OLD FORGE POWER EQUIPMENT — ENGINES & EQUIPMENT.