Lowbrow Customs universal steel oil tanks feature two top and one bottom 5/16-18 threaded mounting points to ensure that you have secure and stable mounting. These tanks are road-tested and ready for anything you can throw at them. Tanks are 5" (12.7cm) in diameter, take 3 quarts (2.84 liter) of oil, have 1/4 NPT bungs for feed, return and vent lines and come complete with a knurled aluminum screw-in style filler cap.