Oil Filter Element C-4 Large L Head Military Models Early CJ2A, M38A1 1 Required.
This is the oil filter used on MB, GPW and early CJ2A, some M38 and some M38A1. The C-4 filter measures 4 1/4" wide by 4 3/4" tall. It also comes with a flat gasket with an outside diameter of 5" that fits most filters.
1 Required per Jeep.