The Milwaukee 8 and Newer Twin Cam engines have a know sumping issue. The A1 Ventilator will allow your engine to breath more than any of the competition. The A1 Ventilator will offer you engine lower crankcase pressures, cooler oil temperatures, less scavenging of oil into your air cleaner (thus robbing horsepower also), and assist with less sumping conditions. This is an excellent upgrade for a stock engine or a highly modified engine.
Please do your research and see that in 2009 Harley Davidson swapper the oil stick to a twist in the same time they strunk head breathing. They know that the case pressure was going to raise. HD has no choice but to comply with the Clean Air act.
HD engines were vented from the case for years. Then EPA forced the breather into the heads to the intake and thus burning the excess oil. The issue now is that the engines are larger and have less ventilation. The excess oil can cause carbon build up. The newer design of the case on the M8 has a flaw in design that the poor venting exposes.
HD cannot address this issue do to EPA restrictions. We will NOT ever ask you to drill into your case, making a permanent alteration.
We do NOT want you to take a chance of possibly dropping shavings into your oil pan. This could be a catastrophic accident why chance it? You do not need a "check valve", this could cause an adverse affect and be just as detrimental to your engine. The A1 Ventilator is installer friendly, even to a novice hobbyist. No tools are needed other than a screwdriver to tighten one hose clamp.The A1 Ventilator is an American made CNC billet aluminum part, NOT a cheap plastic injected part or any other "quick fix". There are many home made tries out there or as we like to call them "Flea Market Fixes". You have a 25K plus investment, it should continue to look like it. Our fix is 99.00. If you want an oil stick there are other companies for 279.00.
Either way use one or the other. You spend that much on a motorcycle, 1000.00 exhaust, 500.00 air cleaner, 200.00 blue jeans, whats 99.00? The A1 Ventilator is different in many ways making it the most efficient design to date.CNC Billet A1 Ventilator Oil Cap (NO DRILLING REQUIRED). 3/8 Breather ventilation without choking the size down in other areas. UNI brand Washable filter with a zip tie and hose clamp. 3/8 Black Gates Fire Proof Hose. New O Ring for the M3 breather cap. Dyno proven horsepower gains with some engine combinations. Each kit comes with everything you need to install. Please note you will need to carry your factory OEM dip stick with you if you would like to check your oil while riding. Make sure you put your dip stick with your tire gauge on your bike. For closed course competition ONLY. The item "GLOSS BLACK M3 Harley Davidson m8 Street Oil Dipstick Ventilator a1 tour flh hd" is in sale since Monday, February 10, 2020. This item is in the category "eBay Motors\Parts & Accessories\Motorcycle Parts\Other Motorcycle Parts". The seller is "madmonkeymotorsports" and is located in Winston-Salem, North Carolina. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Taiwan, South africa, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Mexico, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi arabia, United arab emirates, Qatar, Kuwait, Croatia, Malaysia, Brazil, Colombia, Antigua and barbuda, Aruba, Belize, Dominica, Grenada, Saint kitts and nevis, Saint lucia, Barbados, Bangladesh, Bermuda, Brunei darussalam, Ecuador, Egypt, Gibraltar, Guadeloupe, Iceland, Jordan, Cambodia, Cayman islands, Sri lanka, Luxembourg, Macao, Maldives, Nicaragua, Oman, Pakistan, Paraguay, Reunion, Viet nam, Uruguay, Montserrat, Turks and caicos islands, Bolivia, French guiana, Guernsey, Jersey, Liechtenstein, Monaco, Martinique, Peru, Russian federation.