ECOGARD XA3087 Premium Engine Air Filter Fits BMW 535i, 635CSi, 325e, 320i, M3, 318i, 528e, 633CSi, 733i, 735i, 535is, 528i, 533i, L6, L7, 530i / Yugo GV, Cabrio COMPATIBLE with 1985-1988 BMW 535i, 1985-1988 BMW 635CSi, 1984-1985 BMW 325e, 1980-1983 BMW 320i, 1988-1991 BMW M3, 1984-1985 BMW 318i, 1982-1985 BMW 528e, 1978-1984 BMW 633CSi, 1978-1984 BMW 733i, 1985-1987 BMW 735i, 1988 BMW 535is. IMPROVE PERFORMANCE by changing your vehicle's air filter at least every 12,000 miles (or as recommended in your car owner's manual); to ensure your vehicle's engine has the clean and efficient air flow it needs for fast acceleration and long term power. AVOID INCREASED ENGINE WEAR caused by dirty air intake filters that may allow damaging particles to get into the engine. FACTORY FIT FOR EASY INSTALLATION. Replaces: FRAM CA4521 Purolator A23087 WIX 46135 OE 13 72 1 271 254. SPECIFICALLY ENGINEERED AND TESTED for BMW, Yugo OE (original equipment) engine air filter's fit, form, and function.