aFe POWER PROGUARD Oil Filters deliver increased flow and efficiency that are demanded in today's vehicles. These canister style oil filters utilize a high performance synthetic media for maximum filtration with minimal flow restriction and are tested to ISO 4548-12. Each canister features a 3/8" ratchet drive for easy removal and is constructed from high strength steel. aFe ProGUARD Oil Filters are direct OE replacement filters.