AM3058T Cylinder Head w/Guides & Seats Fits John Deere 420 430 440One New Aftermarket Replacement Fits John Deere Cylinder Head (with Seats & Valve Guides) that fits Tractor models: 440 (Early), 420, 430 PLEASE NOTE: The Valve Seats must be Final Machined and the Guides must be Reamed to Fit the Valve Stems Does Not include Valves, Springs or Studs CUSTOMER IS RESPONSIBLE FOR ALL FINAL MACHINING, including Head Surfacing if needed