Cap 198436390 to cover the oil filler, with high-quality construction to ensure a good seal and prevent oil loss. 
FITS - 402D-05, 402F-05, 403A-11, 403A-15, 403D-07, 403D-11, 403D-15, 403D-15T, 403D-17, 403F-07, 403F-11, 403F-15, 403F-15T, 404A-22, 404D-15, 404D-22, 404D-22T, 404D-22TA, 404F-22, 404F-22T