40-3020903 Head gasket, Hercules model G3400 engines. Superseded numbers were 40-3020902 and 287218 Hercules even though 757-18460 is still

even though 757-18460 is still a good number

10363/3897 Front/Rear Hydraulic cylinder

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*Attention* This gasket will not fit the TS/TR1/2 engines

40-3020903 Head gasket, Hercules model G3400 engines. Superseded numbers were 40-3020902 and 287218 Hercules even though 757-18460 is still40 3020903 Head gasket used on the 3400 series 6 cylinder Hercules engines, both Diesel and Gas types. Old part number will be listed as 40 3020902 and 287218. There maybe some variation in appearance depending on OEM manufacturer. This will be item number 16 in the Hercules drawing NSN 5330 01 389 0704, NSN 5330 00 133 0811