Moroso Air/Oil Separator Polished - Twin Cam with S&S Teardrop Air Cleaner
About Moroso
Moroso has manufactured racing components in Connecticut since 1968, supplying engine, chassis and shop products developed through motorsport.
The Moroso Air/Oil Separator for Twin Cam engines with an S&S Teardrop air cleaner is designed to intercept crankcase vapors, oil mist, and moisture before they enter your intake system. This crucial component keeps your breather system functional while protecting your air filter, throttle body, intake valves, and pistons from excessive oil and carbon buildup.
Why riders pick this
- Filters crankcase vapors and oil mist from the intake
- Two-piece body for easy cleaning and maintenance
- Captures oil in the canister, no venting to atmosphere
- Reduces detonation and carbon buildup for better performance
- Protects air filter, throttle body, and intake valves
When you're running a performance Twin Cam, managing crankcase blow-by is critical. The Moroso Air/Oil Separator prevents oil and contaminants from recirculating into your engine's intake, which can lead to detonation, reduced performance, and costly carbon deposits. It's an essential upgrade for any rider looking to maintain engine health and maximize efficiency.
Clean Air, Optimal Performance
- Filters crankcase vapors, unburned fuel, oil mist, and moisture from the breather system
- Two-piece body design unscrews for easy cleaning and routine service
- Sealed system captures oil in the canister, preventing mess on your bike or the ground
- Reduces detonation and knock caused by a contaminated intake charge
- Made in the U.S.A. for quality and reliability
Maintain Your Motor's Health
Unlike systems that vent to the atmosphere, the Moroso separator is a closed unit that captures contaminants for disposal, keeping your engine bay clean and environmentally responsible. This design not only protects your engine but also ensures your air filter remains free of oil saturation, allowing it to perform at its best. It's a simple, effective solution for long-term engine vitality.
Specifications
- Brand: Moroso
- Manufacturer Part #: 85719
- UPC: 84663857195
- Length: 9 in
- Width: 6 in
- Height: 5 in
- Weight: 2 lbs
Common questions
Why is this better than venting to atmosphere?
Atmospheric vents can dump oil onto your bike and the ground. The Moroso air/oil separator's sealed design captures oil in the canister for mess-free operation and easy disposal, keeping your bike cleaner.
Will this fit my Twin Cam if I don't have an S&S Teardrop air cleaner?
This Moroso air/oil separator is specifically designed for Harley-Davidson Twin Cam engines that are equipped with an S&S Teardrop air cleaner. Compatibility with other air cleaner setups is not guaranteed.
How often does this separator need to be cleaned?
The frequency of cleaning depends on your riding style and engine condition. The two-piece body unscrews easily for inspection and cleaning, allowing you to service it as needed to maintain optimal function.
Ordering from Vtwinbikers
- Brand new, sourced through authorized US distribution — never used, never grey-market.
- Not sure it fits? Use Shop by Bike to filter by your year and model, or email us and we will confirm before you order.
- Harley-Davidson and Indian Motorcycle is all we do, so you are talking to people who ride what you ride.
| BRAND | Moroso |
| TYPE | Intake/Carb/Fuel System |
| SKU | 82-9504 |
| WEIGHT | 2.0 lb |
