Air Filter / Honda 17211-899-000.  Width: 4 5/8 ", Length: 6 1/2 ", Height: 1 3/16 ", Honda code 1239300, Pre-oiled in bag.

Replaces:
Honda 17211-899-000
J. Thomas AF-0026
NHC 261-0748
Oregon 30-963
Rotary 12801

Fits the following:
Generac 420cc generator engines

Honda GX240, GX270, GX340 and GX390; generators EB3000, EB3500, EB3800, EB4000, EB5000, EB6500, EM3000, EM3500, EM3800, EM4000, EM5000, EM6000, EM6500, EMS4000, EMS4500, EW140, EW170, EW171, EX3300, EX4500 and EXW171