DESCRIPTION One New Aftermarket Valve Spring Fits IH/FARMALL Models: H (Gas or Distillate Only Exhaust with Roto Exhaust Valves), HV (Gas or Distillate Only Exhaust with Roto Exhaust Valves), I-4 (Gas or Distillate Only Exhaust with Roto Exhaust Valves), O-4 (Gas or Distillate Only Exhaust with Roto Exhaust Valves), OS-4 (Gas or Distillate Only Exhaust with Roto Exhaust Valves), W-4 (Gas or Distillate Only Exhaust with Roto Exhaust Valves), Super H (With C164 4-Cylinder Gas Engine), Super HV (With C164 4-Cylinder Gas Engine), Super W-4 (With C164 4-Cylinder Gas Engine), 350 (With C175 4-Cylinder Gas Engine), 300 (With 4-Cylinder Gas Engine C169)