LYCOMING 68732-AN-EQ-2-0 Cylinder

( Brand: Lycoming ), ( Manufacturer Part Number: 68732-AN-EQ-2-0 ), ( Part Type: Cylinder ), ( Compatible Model: Lycoming 68732 )

Review LYCOMING Cylinder Assembly 68732

The **Lycoming 68732-A1E2** is a robust and meticulously engineered aircraft engine, specifically a six-cylinder, horizontally opposed (flat-six) air-cooled powerplant designed for high-performance general aviation applications. This model belongs to the renowned **Lycoming O-360 series**, a workhorse of the aviation industry known for its reliability, durability, and adaptability across a wide range of aircraft, from light sport planes to high-performance singles and trainers. The **68732-A1E2** variant is a refined iteration of the classic O-360 design, featuring a **2,000 cubic inch displacement** (hence the "-32" designation, though it s important to note that the actual displacement is closer to 199 cubic inches, a common point of confusion in Lycoming s legacy numbering system) and a **145 horsepower** output at 2,700 RPM, making it a versatile choice for pilots seeking a balance between power and efficiency.

At its core, the **68732-A1E2** is built with aviation-grade aluminum alloys and precision-machined components, ensuring structural integrity and longevity even under demanding flight conditions. The engine s **horizontally opposed cylinder arrangement** provides exceptional smoothness, reducing vibrations that can affect both pilot comfort and aircraft handling. Each of the six cylinders is individually cast with a **wet-sump lubrication system**, allowing for efficient oil circulation and cooling, while the **dry-sump option** (available as an upgrade) further enhances reliability by preventing oil starvation during aggressive maneuvers. The **direct-drive propeller connection** simplifies the drivetrain, eliminating the need for complex reduction gearing while maintaining robust torque output.

One of the standout features of the **68732-A1E2** is its **fuel-injection system**, which replaces the traditional carburetion found in earlier O-360 models. This advancement eliminates carburetor icing and improves throttle response, making the engine more reliable in varying weather conditions and simplifying pilot operation. The fuel-injection setup also contributes to better fuel efficiency and reduced emissions, aligning with modern aviation standards while retaining the engine s legendary durability. Additionally, the **electronic ignition system** ensures consistent spark delivery across all cylinders, further enhancing performance and reducing the risk of misfires.

The **68732-A1E2** is designed with **ease of maintenance and accessibility** in mind, a hallmark of Lycoming s engineering philosophy. The engine s components are modular, allowing for straightforward disassembly and servicing, which is critical for pilots and mechanics operating in remote or resource-limited environments. Critical parts such as the **magneto, starter, and alternator** are easily accessible, and the **cylinder head design** allows for simple removal and inspection, a key factor in preventing catastrophic failures. The engine also incorporates **self-adjusting valve lifters**, reducing the need for frequent valve train maintenance and extending the intervals between overhauls.

For aircraft operators, the **68732-A1E2** offers an ideal blend of power and efficiency, making it a popular choice for high-wing and low-wing aircraft alike. Its **145 horsepower** is sufficient to propel a wide range of general aviation aircraft at cruising speeds of **120 150 knots**, depending on the airframe and propeller selection. The engine s **lightweight yet sturdy construction** contributes to improved fuel economy, allowing for longer range and endurance on shorter fuel loads. Furthermore, the **Lycoming O-360 series** has a proven track record of **over 50,000 flight hours** on some engines, demonstrating its ability to withstand the rigors of frequent use without compromising performance.

In summary, the **Lycoming 68732-A1E2** is a testament to Lycoming s legacy of innovation and reliability in the aviation industry. Whether installed in a sleek sport aircraft, a rugged utility plane, or a training aircraft, this engine delivers a harmonious combination of power, smooth operation, and low maintenance demands. Its fuel-injection system, robust construction, and user-friendly design make it a preferred choice for pilots who demand both performance and dependability in every flight. With proper maintenance and care, the **68732-A1E2** continues to be a trusted powerplant, ensuring that the aircraft it propels can take to the skies with confidence and efficiency.

### **Pros and Cons of Buying a Lycoming O-320-E2A (200 HP, 4-Cylinder) Engine**

The **Lycoming O-320-E2A** is a reliable, air-cooled, horizontally opposed aircraft engine commonly found in light aircraft such as the Cessna 172, 182, and Piper Cherokee. Below is a detailed analysis of its advantages and disadvantages, followed by a conclusion and recommendation.

---

### **Pros of the Lycoming O-320-E2A**

1. **Proven Reliability and Durability**

- The O-320 series has a long history of dependable performance, with many engines exceeding **2,000 hours** before major overhauls.

- Lycoming engines are known for their robustness in general aviation, with a strong aftermarket support network.

2. **Widely Available Parts and Support**

- Due to its popularity, replacement parts, service manuals, and overhaul facilities are readily accessible.

- Many aircraft mechanics and repair stations specialize in Lycoming engines, ensuring easier maintenance.

3. **Good Fuel Efficiency for Its Class**

- With a **200 HP** output, it provides adequate power for most light aircraft while consuming fuel at a reasonable rate ( **8 10 gallons per hour** depending on load and altitude).

- Better fuel efficiency than some higher-HP engines, reducing operational costs.

4. **Moderate Maintenance Costs**

- Compared to more exotic or high-performance engines, the O-320 has relatively straightforward maintenance requirements.

- Major overhauls are expensive ( **$20,000 $30,000**), but they are not as frequent as on some other engines.

5. **Proven Airframe Compatibility**

- Fits seamlessly into popular aircraft like the **Cessna 172, 182, and Piper Archer**, meaning no major modifications are needed for installation.

- Many used examples are available, making it easier to find a suitable airframe.

6. **Good for Training and General Aviation**

- Ideal for flight training, personal use, and cross-country flying due to its balanced power and reliability.

- Not overly complex, making it easier for pilots to troubleshoot minor issues.

7. **Resale Value**

- Lycoming-powered aircraft, especially well-maintained ones, hold their value reasonably well in the used market.

---

### **Cons of the Lycoming O-320-E2A**

1. **Aging Technology**

- While reliable, the O-320 is a **1950s-era design** with no major modern upgrades. This means it lacks some efficiency and performance benefits of newer engines.

- No fuel injection (carbureted), which can lead to **carb icing** issues in cold, humid conditions.

2. **Higher Maintenance Burden Over Time**

- Despite its reliability, the engine requires **regular inspections, valve adjustments, and magnetos** tasks that add up in labor costs.

- **Magneto failures** are a common issue, requiring periodic replacement ( **$1,500 $2,500 each**).

3. **Noise and Vibration**

- Horizontally opposed engines are inherently **loud and vibration-prone**, which can be uncomfortable over long flights.

- Some pilots report **excessive vibration** in certain models, requiring careful balancing.

4. **Limited Power for Performance Flying**

- At **200 HP**, it struggles with **high-performance maneuvers, steep climbs, or heavy loads** (e.g., carrying extra passengers or luggage).

- Not suitable for **aerobatics or high-speed flying** without modifications.

5. **Environmental and Emissions Concerns**

- Carbureted engines produce **more hydrocarbons and CO** than fuel-injected or modern turbocharged engines.

- Some airports and regions are phasing out older carbureted engines due to emissions regulations.

6. **Overhaul Costs Can Be High**

- A **full engine overhaul** (including new cylinders, pistons, and crankshaft) can cost **$20,000 $30,000 **, depending on the shop.

- Some owners opt for **boring and honing** (cheaper alternative) instead of a full rebuild.

7. **Limited Longevity Compared to Modern Engines**

- While many O-320s last **10,000 hours**, newer engines (e.g., **IO-360, IO-550, or turbocharged Lycomings**) offer **better efficiency, power, and longevity**.

- Some newer aircraft are transitioning to **fuel-injected or turbocharged engines**, reducing the long-term value of O-320-powered airframes.

---

### **Conclusion**

The **Lycoming O-320-E2A** remains a **solid choice for pilots who prioritize reliability, low operating costs, and ease of maintenance** in a **light training or general aviation aircraft**. It excels in **basic flying, flight training, and personal use** where high performance is not required.

However, for those seeking **better fuel efficiency, reduced emissions, or higher power output**, newer engines like the **IO-360 (fuel-injected) or IO-550 (turbocharged)** may be worth considering. Additionally, if you plan to **fly frequently or push the aircraft hard**, the O-320 s limitations in power and efficiency could become noticeable.

If you **already own an O-320-powered aircraft** and it is **well-maintained**, it remains a **cost-effective and dependable option**. If you are **buying a new-to-you aircraft**, weigh the trade-offs against modern alternatives before committing.

### **Final Recommendation**

- You need a **reliable, low-maintenance engine** for **training, personal flying, or casual use**.

- You are **comfortable with carbureted systems** and occasional **magneto replacements**.

- You **prioritize cost efficiency** over cutting-edge technology.

- You plan to **keep the aircraft for 5 10 years** without major upgrades.

- You want **better fuel efficiency, lower emissions, or more power**.

- You plan **long-term heavy use** or **performance flying**.

- You are **concerned about future resale value** in a changing aviation market.

For most **general aviation pilots**, the O-320-E2A is a **wise investment** but it is not the best choice for those seeking **modern advancements in aircraft engines**. Always **inspect the engine thoroughly** before purchase, including **compression checks, magnetos, and propeller synchronization**, to ensure it is in good condition.

Details:

The Lycoming Cylinder Assembly 68732 is an engine component specifically designed for engines.

part #: 68732aneq20 prices

• $150.00-$175.00

specifications engineaviatio:

• brand: Lycoming
• mpn: 68732-an-eq-2-0
• part type: Cylinder
• compatible model: Lycoming 68732

returns engineaviatio:

• policy: No Returns

shipping engineaviatio:

• carrier: USPS
• class: Standard
• cost: $95.02
• type: Calculated
• transit: 7-11 Days
• service: USPS Ground Advantage

offer engineaviatio:

• started: May 8, 2026
• quantity: 1
• best offers: True
• sold: 0
• options: Ship-to-home
• availability: In Stock

payments engineaviatio:

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

seller engineaviatio:

• rating: 100.0%
• city: Randle, Washington
• # reviews: 1

general engineaviatio:

• condition: Used
• Aviation Parts Accessories > Engines > Engine Components

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