Collection: Auto - Oil/Air Separator

Protect your engine from carbon buildup and improve combustion efficiency with our selection of Auto Oil/Air Separator components. At DIY Customs, we provide high-performance AOS systems, specialized oil catch cans, durable PCV breather kits, and heavy-duty baffled separators designed for a perfect fit in any high-performance or turbocharged vehicle. Whether you are preventing oily blow-by from coating your intake valves, outfitting a track car for extreme cornering oil management, or ensuring your direct-injection engine stays clean and efficient, our professional-grade hardware offers the internal filtration and capacity you need at unbeatable prices. From specialized multi-stage separators to direct-fit kits for popular performance platforms, we carry the essential gear for every engine health project. Don't see the specific port size (AN-6/AN-10), mounting bracket style, or specialized AOS for your engine? Hit the live chat or call 412-882-8346—we can special order and drop-ship exactly what you are looking for directly to your doorstep!