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Re: Screen under oil sending unit in GM 5.3L
Posted to Technical Discussion Forum on 2/7/2014

Gm calls it the,------- 452 - Valve Lifter Oil Filter

If you go here,Vehicle » Engine, Cooling and Exhaust » Engine » Engine Lubrication » Description and Operation » Lubrication Description (With Active Fuel Management) in All Data ... Login to read more.