1. Motorcycle Intake & Fuel Systems Deals
  2. sku: 22269691618124633
  3. MOROSO MN/J3H2

MOROSO MN-J3H2 Air Cleaner Oil Separator Cams Teardrop MN/J3H2 Air/oil

fits model: Cl, Twin.

J3h2 Moroso Mn/j3h2 Air/oil Separator For Twin Cams With S&s Teardrop Air Cleaner Cl

( Brand: Moroso ), ( Manufacturer Part Number: MN/J3H2 ), ( Color: Black ), ( Compatible Year: 2007 ), ( Compatible Make: Harley Davidson ), ( Compatible Model: Flhtcuse2 Screamin Eagle Ultra Classic Electra Gl ), ( Bundle Description: 1 Pc Genuine Moroso Air/oil Separ ), ( Type: Air/oil Separator For Twin Cams Withs S Teardrop Air Cleaner ), ( Core Charge: Free No Core Charge ), ( Fitment Type: Direct Replacement )

Review MOROSO Mn/j3h2 Air/oil Separator Cams Withsteardrop Air Cleaner fits TWIN CL

The **Moroso MN/J3H2 Air/Oil Separator** is a meticulously engineered, high-performance component designed exclusively for twin-cam engines, offering a robust solution for maintaining optimal lubrication and airflow efficiency in applications where reliability and precision are paramount. This premium separator is crafted from durable, high-grade materials, ensuring long-lasting performance even under the most demanding conditions, whether you're running a classic muscle car, a high-revving street rod, or a competition-ready hot rod. The J3H2 model features a robust, oil-tight design that effectively isolates air from oil, preventing contamination and ensuring that only clean, pressurized air enters the carburetor or fuel injection system. This separation is critical for maintaining proper carburetion, preventing oil fouling of the throttle body or intake valves, and extending the life of your engine s critical components.

At the heart of this separator is its **teardrop-shaped air cleaner housing**, a design choice that enhances airflow dynamics while minimizing turbulence and pressure drop. The teardrop shape allows for a more streamlined intake path, reducing backpressure and enabling your engine to breathe more freely, which is especially beneficial for high-revving twin-cam setups where every little bit of efficiency counts. The housing is paired with Moroso s **steel-topped air cleaner**, a robust and durable unit that provides a secure seal and easy access for maintenance. The steel top ensures a tight, leak-proof connection to the separator, while the integrated air filter media typically a high-quality cotton or synthetic blend captures dust, debris, and contaminants before they can enter the engine, protecting internal components from premature wear.

Installation of the Moroso MN/J3H2 is straightforward, thanks to its **universal compatibility** with most twin-cam applications, including those from Ford, Chevy, and other manufacturers with similar intake manifolds. The separator mounts directly to the valve cover, replacing the stock oil filler tube and housing, and integrates seamlessly with the engine s existing oil system. Its **adjustable oil level** feature allows for precise tuning of the oil-to-air separation ratio, ensuring optimal performance whether you're running a stock oil pump or an upgraded aftermarket unit. The separator s **oil drain plug** is conveniently located for easy maintenance, allowing for quick oil changes without disassembling the entire intake system.

Beyond its functional benefits, the Moroso MN/J3H2 is also a stylish upgrade for any engine bay, blending performance with aesthetics. Its clean, polished finish and compact design complement modern and classic engine setups alike, making it a practical choice for both show cars and daily drivers. Whether you're restoring a vintage muscle car, building a high-performance street machine, or preparing a race engine, this air/oil separator delivers the reliability and efficiency needed to keep your twin-cam running at its best. With Moroso s reputation for quality and innovation, the J3H2 is more than just a replacement part it s a performance-enhancing solution that ensures your engine stays clean, lubricated, and ready to rev.

**Pros and Cons of buying a Moroso MN/J3H2 Air/Oil Separator for Twin Cam Engines with a Teardrop Air Cleaner (CL)**

### **Pros:**

1. **Improved Engine Performance** The Moroso MN/J3H2 is designed to enhance airflow and reduce oil carryover into the intake system, which can improve throttle response and overall engine efficiency. This is particularly beneficial for high-performance applications where clean, oil-free air is critical.

2. **Compatibility with Teardrop Air Cleaners** The unit is specifically engineered to work seamlessly with the Teardrop air cleaner (CL series), ensuring a proper fit without modifications. This makes installation straightforward for riders already using this popular air cleaner setup.

3. **Durability and Quality** Moroso is a well-regarded brand in the motorcycle aftermarket, known for producing reliable and long-lasting components. The MN/J3H2 is built to withstand the demands of daily riding and performance use.

4. **Reduced Oil Contamination** One of the primary functions of an air/oil separator is to minimize oil droplets from entering the intake system, which can foul spark plugs, clog the carburetor (or intake), and reduce power. The Moroso unit effectively addresses this issue.

5. **Easy Installation** The design is straightforward, and the unit is typically installed between the air cleaner and the carburetor or intake manifold. Many riders report that it can be installed in under an hour with basic tools.

6. **Cost-Effective Upgrade** Compared to more complex modifications like full intake system overhauls, the Moroso MN/J3H2 offers a relatively affordable way to improve airflow and engine cleanliness without a significant investment.

7. **Maintenance-Friendly** The unit is designed to be easily accessible for cleaning or replacement of internal components, such as the oil separator mesh or gaskets, which can extend its lifespan and ensure continued performance.

---

### **Cons:**

1. **Potential for Increased Backpressure** While the Moroso MN/J3H2 is designed to minimize backpressure, some riders report a slight reduction in airflow compared to a completely open intake setup. This may not be noticeable on stock engines but could be more apparent on heavily modified or high-performance setups.

2. **Additional Maintenance Requirement** The air/oil separator introduces an extra component that may require periodic cleaning or inspection, especially in dusty or dirty riding conditions. Neglecting maintenance could lead to reduced effectiveness or even failure over time.

3. **Compatibility Considerations** While the unit is designed for the Teardrop CL air cleaner, there may be slight variations in fitment depending on the specific year or model of the motorcycle. Riders should double-check compatibility with their exact setup to avoid issues.

4. **Limited Performance Gain on Stock Engines** For riders with stock or lightly modified engines, the benefits of the Moroso MN/J3H2 may be modest. The most noticeable improvements are typically seen on engines with higher compression ratios, aftermarket carbs, or performance tuning.

5. **Cost of Replacement Parts** If the unit fails or requires internal components (e.g., gaskets, seals) to be replaced, the parts may not be overly expensive, but they are not free. Riders should budget for potential future replacements.

6. **Installation Complexity for Some Riders** While generally straightforward, installation may require some mechanical skill, especially if the rider is unfamiliar with working on the intake system. Improper installation could lead to leaks or reduced performance.

7. **Not a Complete Solution for Oil Issues** The Moroso MN/J3H2 helps reduce oil carryover but does not eliminate it entirely. Riders with severe oil leakage issues (e.g., from the crankcase or carburetor) may still experience some oil fouling in the intake, and addressing the root cause of the oil leak is also recommended.

---

### **Conclusion:**

The Moroso MN/J3H2 air/oil separator is a practical and effective upgrade for Twin Cam engines equipped with a Teardrop air cleaner. It addresses a common issue oil contamination in the intake system while offering improved airflow and potential performance gains, particularly for riders with modified or high-performance setups. The unit is well-built, easy to install, and relatively affordable, making it a solid choice for those looking to enhance their engine s breathing without a major overhaul.

However, it is not a universal solution. Riders with stock engines may see limited benefits, and those with severe oil leaks should also address the underlying cause. Additionally, the unit requires minimal maintenance, which some riders may overlook, potentially reducing its effectiveness over time.

### **Recommendation:**

If you are experiencing oil fouling in your intake system, sluggish throttle response, or reduced performance due to oil carryover, the Moroso MN/J3H2 is a worthwhile investment. It is particularly well-suited for riders with modified Twin Cam engines, aftermarket carbs, or those who frequently ride in dusty conditions. For stock engines or those with minor oil issues, the benefits may be less pronounced, but the unit still serves as a preventive measure against future problems.

For the best results, pair the Moroso MN/J3H2 with regular maintenance, including cleaning the air cleaner and checking for oil leaks. If you are unsure about installation or compatibility, consult a mechanic or refer to Moroso s installation guide to ensure a proper fit. Overall, it is a reliable and recommended upgrade for Twin Cam owners looking to optimize their intake system.

Details:

Moroso Air/Oil Separator for Twin Cams withs Teardrop Air Cleaner Cl: Status: In Stock.

part #: mnj3h2 price

  • $373.16

specifications intakefuelmotorcycle:

  • for models: Cl, Twin
  • brand: Moroso
  • mpn: Mn/j3h2
  • color: Black
  • compatible year: 2007
  • compatible make: Harley Davidson
  • compatible model: Flhtcuse2 Screamin Eagle Ultra Classic Electra Gl
  • bundle description: 1 Pc Genuine Moroso Air/oil Separ
  • type: Air/oil Separator For Twin Cams Withs S Teardrop Air Cleaner
  • core charge: Free No Core Charge
  • fitment type: Direct Replacement

seller intakefuelmotorcycle:

  • rating: 98.7%
  • city: Multiple warehouses
  • # reviews: 17097

returns intakefuelmotorcycle:

  • time: 30 Days
  • paid by: Seller
  • policy: Returns Accepted

payments intakefuelmotorcycle:

  • other
  • wallet: Apple-pay
  • credit card: Discover

shipping intakefuelmotorcycle:

  • transit: 3-6 Days
  • type: Fixed
  • class: Standard
  • service: Standard
  • cost: $0.00

offer intakefuelmotorcycle:

  • started: February 5, 2026
  • options: Ship-to-home
  • quantity: 1
  • sold: 0
  • availability: In Stock

general intakefuelmotorcycle:

  • Motorcycle Scooter Parts Accessories > Air Intake Fuel Delivery > Other Air Intake Fuel Delivery
  • condition: New
for models: cl, twin, compatible year: 2007, compatible make: harley davidson, compatible model: flhtcuse2 screamin eagle ultra classic electra gl, bundle description: 1 pc genuine moroso air/oil separ, type: air/oil separator for twin cams withs s teardrop air cleaner, core charge: free no core charge, fitment type: direct replacement,
category: motorcycle parts > motorcycle scooter parts accessories > air intake fuel delivery, color: black, sku: 22269691618124633,
Moroso MN-J3H2 Is Similar To:
intakefuelmotorcycle logo
1 offer $373.16 USD
  • New. Offer #1 priced at $373.16 + $0.00 shipping estimate = $373.16* total. FREE SHIPPING

Copyright © intakefuelmotorcycle.com