Multi layer high performance air filter traps more dirt and has less restriction than traditional paper filterFilter is clean-able and re-usableSame filters as used in Ford Racing cold air induction kits Part NumberDescriptionM-9601-F042004-2006 F-150 (not 2004 Heritage)M-9601-F7301999-2006 F-250/350 7.3L DieselM-9601-F8771987-1997 F-150 with 4.9/5.0/5.8/7.5LM-9601-G13213" x 3" Round. Can be used with M-9600-A302/L302/M302 air cleaner assembliesM-9601-G14214" x 2" Round Air CleanerM-9601-L5401999-2000 F-150 LightningM-9601-L5412001-2004 F-150 Lightning/HarleyM-9601-M052005-2006 MustangM-9601-M3021967-1973 V8 Mustang 2/4 Barrel and 1968-87 F-150M-9601-M3801994-2004 3.8L Mustang and Lincoln BlackwoodM-9601-M461996-2004 4.6L Mustang, All F-Series with 4.2L V-6, & 4.6/5.4L V-8M-9601-M8631987-1993 Mustang 5.0LM-9601-R8851988-1995 Ranger All EnginesM-9601-R9841998-2004 Ranger All EnginesM-9601-Z200Escort ZX2, All 1995-1997 Ranger Package Dimensions: 3.00H x 11.00W x 14.00D Weight: 1.40# Catalog Page: N/A Instruction Sheet: N/A Warranty Available: No