ECOGARD X5438 Cartridge Engine Oil Filter for Conventional Oil - Premium Replacement Fits Audi A8 Quattro, A8 COMPATIBLE with 1997-1999 Audi A8 Quattro, 1997-1999 Audi A8. BUILT for both SYNTHETIC AND CONVENTIONAL OILS. Proven to drive up to 5,000 miles between oil changes with confidence. GREATER ENGINE PROTECTION by optimally screening out 97% of harmful contaminants such as such as carbon, sand, dust and bits of metal before they can get into your oil. HASSLE-FREE INSTALLATION with included O-rings for housing and cap. INSTALLS EASILY with included instructions. Replaces: Purolator L15438 WIX 51227 OE 077 198 563.