Collection: Auto - Oil Tank Cap

Seal your external lubrication systems with the professional security of our selection of Auto Oil Tank Cap components. At DIY Customs, we provide high-durability replacement caps for dry sump tanks, specialized vented reservoir covers, durable billet aluminum caps for custom catch cans, and heavy-duty threaded plugs designed for a perfect fit. Whether you are outfitting a high-performance race car with a multi-stage dry sump system, replacing a lost cap on a custom oil expansion tank, or upgrading to a knurled billet cap for easier removal during hot pit stops, our professional-grade hardware offers the pressure handling and leak protection you need at unbeatable prices. From specialized O-ring sealed caps to direct-fit covers for popular performance oil tanks, we carry the essential gear for every specialized lubrication project. Don't see the specific thread size (AN/Standard), venting style, or specialized cap diameter for your tank? 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!