Air Filter Element (PA3763) by Baldwin Filters®. Dirt and other airborne contaminants reduce engine efficiency. The Baldwin PA4600 Air Filter blocks these agents before the damage is done. This first-rate American-made product is the winning choice for performance-minded racers. Made with craftsmanship and high-tech machinery by highly skilled engineers, it leapfrogs the competition. The product delivers outstanding operation and ensures absolute reliability. Featuring the tried-and-true design, it guarantees to provide hassle-free service for a year in and year out.