Petter AV, AVA and PH gear end camshaft extension oil seal.
As used on the gear end of Petter AVA and PH engines when equipped with a camshaft extension P/N JD25 or 368030
Lister Petter part number JD30 or 250979
Petter AV, AVA & PH Gear End Camshaft Extension Oil Seal P/N 250979