FOAM FILTER CLEANER & DEGREASER IS SPECIALLY DESIGNED FOR CLEANING FOAM AIR FILTERS. REMOVES OIL AND DIRT FROM THE FILTER WHILE ALSO PREVENTING DETERIORATION OF THE FOAM CELLS — MAXIMIZING FILTER LIFE. BEL-RAY FOAM FILTER CLEANER & DEGREASER CAN ALSO BE USED AS AN ENGINE AND GENERAL PURPOSE DEGREASER.