Stationary Diesel Engine Generator Air Cleaner Filter Intake Assembly. This one has a 4″ Inlet diameter and a 6″ flange that can bolt up to the intake piping on the engine or generator application. This is a super heavy duty part priced right. Original application was a Detroit diesel on a ship so this also can be used in marine applications. NSN 2940-01-350-8892 Farr PN#L-63707 Buy Here and Save $$$$$$$ here ????? 11996