If you have a "thick cork" type of gear end cover gasket you will order part number
Rear main/Bellhousing Seal used on 6 cylinder 3400 series and the 4 cylinder 2300 series Hercules gas and diesel engines
This will be the Kohler 25 engine
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this gasket set provides all the necessary gaskets for a technician to perform a complete valve job or decarbon job on a LPW/S3 water cooled Lister Petter engine
751-12710 Nut valve cover, used in the Lister Petter LPA, LPWT, LPWS and LPW2/3/4 model engines. hercules closed power unit If you have a "thick751 12710 Valve cover nut, Used on Lister Petter LPA, LPWT and LPW S engines. This item is number 31 on the Lister Petter drawing. The LPA, LPWG LPW S T engines were used in numerous pieces of equipment, Moffett M5000 Forklift, Ditch Witch 400SX plow, Ditch Witch 410SX plow, Ditch Witch JT 920L directional drill, Ditch Witch JT 820L directional drill, Ditch Witch FP35 Fluid Pac, Onan gas generators model GNAA, GNAB, GNAC, Elliott MagnaTek generators