42 Draft Designs Stealth Oil Catch Can 1/2" NPT for VW & Audi work well without giving up it's purpose to curious eyes, now that's stealth! This stealth oil catch can is essentially a stripped-down and smoothed-out version of the ultimate can. The stealth can offers the same internal design, but without all the bells and whistles. Built to function, the stealth can accomplishes the fundamental job of an oil catch can without any additional thought or modification. 1/2" NPT female bung inlet and outlet fittings allow connection of 3/4" tubing through the use on -AN fittings. Inside, four filter screens create a maze for the PCV gases to navigate allowing oil droplets to collect as lighter gases pass. Gravity lends a hand, collecting the oil and gunk at the bottom of the can. A bottom drain allows the can to be drained at any time. Minimized by design, the 42 Draft Designs Stealth oil catch can skips adjustable features in order to achieve a discrete look. Vertical and hoizontal mounting brackets are permanently welded to the back of the can. Inlet and outlet fittings oppose the mounting brackets, placed inline with eachother and the bottom drain. Press-formed top and bottom caps offer a smooth, factory look without any logos or markings. Throughout the life of the stealth can, the filter media will never need to be replaced. Tubing can be removed and re-installed from the fittings without ever damaging them. There are no o-rings or other accessories to replace. The entire catch can is built with precision from heavy duty materials proven to stand the test of time.
42 Draft Designs stealth oil catch cans take the basic idea of an oil catch can to the next level! Every internal combustion engine has pressure and blow-by gases in the crankcase and valve cover. Some engines do a better job of separating the oil vapors before reaching the PCV (positive crankcase ventilation) vents than others. Most engines don’t, sending a nasty mix of oil vapor and waste gases out the PCV vent and into the intake system. These vapors smother important (and costly) sensors with oil and gunk. In extreme cases, this gunk can build up on the valves killing performance. On a micro level, oil vapors displace oxygen molecules altering air-fuel ratios and effectively lower the octane level of your fuel. The concept is simple – trap the oil vapors in the PCV system before they have the opportunity to reach the air intake. 42 Draft Designs stealth oil catch cans have inlet and outlet fittings that are made from ¾” tubing, the same basic size as the OEM PCV fittings and hoses on your VW or Audi. Larger inlet and outlet fittings allow for uninterrupted flow from the PCV vent to the can and back. Tubing smaller than stock will restrict the PCV vent and the flow of vapors. As PCV gases enter our catch can they disperse and turn upwards, forced to flow through a series of four filter screens. As the gases flow through these screens, heavy oil and gunk sticks and lighter gases reach the outlet tube at the top. Accumulated oil and gunk naturally runs off the filter screens and collect at the bottom of the tank. Without these screens, only a fraction of the liquids are trapped by the catch can. A bottom drain allows the tank to be drained without removing the entire catch can.
Two models are available, both based on the same successful internal design. The Ultimate Oil Catch Can offers features and options found nowhere else. Our Stealth Oil Catch Can offers the function of our ultimate can in a discrete package.