ECOGARD XA2923 Premium Engine Air Filter Fits Ford F-250, F-350, F Super Duty, E-350 Econoline, E-350 Econoline Club Wagon, E-250 Econoline Club Wagon, F59 COMPATIBLE with 1988-1994 Ford F-250, 1988-1994 Ford F-350, 1989-1994 Ford F Super Duty, 1988-1991 Ford E-350 Econoline, 1988-1991 Ford E-350 Econoline Club Wagon, 1988-1991 Ford E-250 Econoline Club Wagon, 1988-1994 Ford F59. 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 CA3501 Purolator A52923 WIX 46255 Motorcraft FA1057 OE 446661-C2. SPECIFICALLY ENGINEERED AND TESTED for Ford OE (original equipment) engine air filter's fit, form, and function.