Air filter housing
Land Rover: Series II (1958-61): 4 cylinder petrol with 2.286 cc. engine, Series IIA and III: 4 cylinder petrol and diesel (1961-85) plus 6-cylinder petrol (1967-80)
with element and oil sump assembly
An oil bath air cleaner consists of a sump containing a pool of oil, and an insert which is filled with fibre, mesh, foam, or another coarse filter media. When the cleaner is assembled, the media-containing body of the insert sits a short distance above the surface of the oil pool.
Oil bath air cleaners were very widely used in automotive and small engine applications until the widespread industry adoption of the paper filter in the early 1960s. Such cleaners are still used in off-road equipment where very high levels of dust are encountered, for oil bath air cleaners can sequester a great deal of dirt relative to their overall size without loss of filtration efficiency or airflow.