HIRTH 3503V18C Engine Exhaust Manual P/n 0126-1785

( Brand: Hirth ), ( Manufacturer Part Number: 3503V18C ), ( Part Type: Engine Exhaust Manual ), ( Warranty: 30 Day ), ( Compatible Make: Hirthmotoren ), ( Country Of Origin: United States )

Review HIRTH Engine 3503 Exhaust Manual And Accessories P/n

The Hirth 3503V18C engine is a powerful and efficient alternative for those seeking a high-performance, air-cooled, two-stroke engine for their aircraft. This specific model, identified by the part number 3503, is a 1800cc version of the Hirth engine line, designed to deliver impressive power output and excellent fuel efficiency.

The Hirth 3503V18C engine is a horizontally opposed, two-stroke design, which translates to a more balanced and smoother operating engine compared to traditional inline or V-configuration two-stroke engines. This engine features a compact, lightweight design, making it an ideal choice for light-sport and experimental aircraft.

The engine is equipped with a number of advanced features, including a high-compression piston design, which boosts power output while maintaining efficient combustion. The engine also features a robust crankshaft and connecting rods, ensuring durability and longevity.

The 3503V18C engine comes with a carburetor intake system, which is responsive and easy to tune for optimal performance. The exhaust system for this engine is identified by the part number 0126-1785. This exhaust system is designed to efficiently expel exhaust gases while minimizing backpressure and maximizing engine performance.

The Hirth 3503V18C engine is known for its ease of maintenance, with a simple design that makes routine checks and repairs straightforward. The engine is also compatible with a wide range of accessories, such as electronic ignition systems and alternative fuel options, providing flexibility for customization and optimization.

In summary, the Hirth 3503V18C engine is a high-performance, air-cooled, two-stroke engine that offers impressive power output, excellent fuel efficiency, and a compact, lightweight design. The exhaust system, identified by part number 0126-1785, is a crucial component of this engine, designed to efficiently expel exhaust gases while minimizing backpressure and maximizing engine performance.

The Hirth 3503V18C engine is a popular choice for ultralight and light-sport aircraft due to its high power-to-weight ratio and reliability. Here are some pros and cons of buying this engine model with the exhaust manual p/n 0126-1785.

1. High Power-to-Weight Ratio: The Hirth 3503V18C engine delivers a high power output of 37 hp at 5,400 rpm, while weighing only 125 lbs. This makes it an ideal choice for ultralight and light-sport aircraft.

2. Reliability: The engine is known for its durability and reliability, with many users reporting long hours of trouble-free operation.

3. Fuel Efficiency: The Hirth 3503V18C engine is known for its fuel efficiency, which can help reduce operating costs.

4. Easy Installation: The engine is relatively easy to install, making it a popular choice for homebuilders and amateur aircraft builders.

5. Exhaust Manual Availability: Having the exhaust manual (p/n 0126-1785) available can make installation and maintenance easier and more straightforward.

1. Cost: The Hirth 3503V18C engine can be more expensive than some other options in its class.

2. Maintenance: Like any engine, the Hirth 3503V18C requires regular maintenance to ensure optimal performance and longevity.

3. Limited Availability: The engine may not be as widely available as some other options, which could make sourcing parts and service more difficult.

The Hirth 3503V18C engine with the exhaust manual (p/n 0126-1785) is a reliable and high-performing option for ultralight and light-sport aircraft. Its fuel efficiency, power-to-weight ratio, and ease of installation make it an attractive choice for many builders and pilots. However, its cost and potential limited availability are important considerations. Ultimately, the decision to purchase this engine should be based on individual needs, budget, and availability.

If you are looking for a high-performing engine for your ultralight or light-sport aircraft, the Hirth 3503V18C engine is definitely worth considering. However, be sure to do your research and compare it to other options in its class to ensure it is the best fit for your specific needs and budget. Additionally, consider sourcing the exhaust manual (p/n 0126-1785) to make installation and maintenance easier.

Details:

Depending on dimensions, it may ship UPS. Hirthmotoren / Hirth 3503 Engine. Free shipping is usually USPS. Guaranteed to pass inspection or your money back.

This engine was purchased and installed onto a BD-5 project about 10 years ago. 30 Day Money Back Guaranteed, less shipping costs. It did some ground runs but the project was never finished. P/N 3503V18C.

Includes Operators Manual, Exhaust Muffler, and Accessories: Shaft, Pulley, Belt, voltage Regulator, Fuel Pump, Engine Computer, Brackets, Clamp, Springs.

part #: 3503v18c price

• $29.99

specifications aviationpar:

• brand: Hirth
• mpn: 3503v18c
• part type: Engine Exhaust Manual
• warranty: 30 Day
• compatible make: Hirthmotoren
• country of origin: United States

general aviationpar:

• condition: Used
• Parts Accessories > Aviation Parts Accessories > Parts

payments aviationpar:

• wallet: Paypal
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offer aviationpar:

• availability: In Stock
• best offers: True
• sold: 0
• started: February 10, 2026
• options: Ship-to-home
• quantity: 1

seller aviationpar:

• rating: 100.0%
• # reviews: 10925
• city: Middletown, Ohio

returns aviationpar:

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