ROTAX 6867680 Cylinder Engine Intake Manifold 912S 914

( Brand: Rotax ), ( Manufacturer Part Number: 6867680 ), ( Part Type: Intake Cylinder Engine Manifold ), ( Country Of Origin: Austria )

Review ROTAX 912 914 Cylinder Engine Custom Intake Manifold Pair Warranty

The **Rotax 912/912S/914 6867680 Intake Manifold** is a precision-engineered component designed specifically for the high-performance, fuel-injected Rotax 912-series engines, including the 912, 912S, and 914 models. Crafted from high-grade aluminum alloy, this intake manifold is built to deliver optimal airflow efficiency while maintaining structural integrity under the demanding conditions of high-revving, turbocharged, or naturally aspirated applications. The manifold features a meticulously designed internal passage system that ensures smooth, unrestricted airflow from the throttle body to the cylinder heads, maximizing volumetric efficiency and power output. Its compact yet robust construction minimizes weight while reinforcing rigidity, reducing vibration and improving overall engine reliability. The manifold is engineered to accommodate the precise fuel injection requirements of the Rotax 912 family, with carefully positioned ports that align with the engine s intake runners for optimal throttle response and torque delivery. Whether used in aircraft, high-performance road vehicles, or competitive racing applications, this intake manifold is a critical component for those seeking enhanced performance without compromising durability. Its compatibility with aftermarket upgrades, such as high-flow throttle bodies or performance air filters, further extends its versatility, making it an essential upgrade for enthusiasts looking to unlock the full potential of their Rotax-powered engines.

### Pros and Cons of Buying a Rotax 6867680 (912, 912S, 914 Cylinder Engine Intake Manifold)

1. **Compatibility and Fitment**

The Rotax 6867680 intake manifold is designed specifically for the 912, 912S, and 914 engines, ensuring a perfect fit without modifications. This eliminates the need for custom fabrication or aftermarket adjustments, reducing installation complexity.

2. **Performance Enhancement**

A well-designed intake manifold improves airflow into the engine, which can lead to better throttle response, smoother power delivery, and increased horsepower especially when paired with high-performance air filters or cold air intakes. Rotax manifolds are engineered to optimize airflow dynamics for these engines.

3. **Durability and Quality**

Rotax components are known for their robust construction, often featuring high-quality materials like aluminum or reinforced plastics. The 6867680 manifold is built to withstand the stresses of high-performance driving, reducing the risk of premature failure.

4. **Stock Replacement Option**

If your manifold is damaged, cracked, or worn, replacing it with an OEM or high-quality aftermarket version like the Rotax 6867680 ensures reliability and maintains the engine s original performance characteristics. This is particularly useful for restorations or maintenance.

5. **Ease of Installation**

Since it is a direct replacement part, installation typically requires minimal tools and expertise. Most mechanics or enthusiasts can swap it out in a few hours, especially if the engine is already disassembled for other work.

6. **Support for Modifications**

If you plan to modify your engine (e.g., upgrading to a turbocharger, adjusting camshafts, or tuning the ECU), a high-quality manifold like this provides a solid foundation for further performance tuning.

7. **Cost-Effective Upgrade**

Compared to fully custom manifolds or extensive engine modifications, replacing the intake manifold is a relatively inexpensive way to improve airflow and performance. The Rotax 6867680 is priced competitively for its quality and fitment.

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1. **Limited Customization**

The Rotax 6867680 is a stock or near-stock replacement part, meaning it does not offer the custom tuning options available with aftermarket manifolds designed for aggressive performance builds. If you re looking for radical airflow improvements (e.g., for racing or extreme power gains), you may need a more specialized part.

2. **Potential for Stock Restrictions**

If your engine is heavily modified (e.g., with aggressive camshafts, forced induction, or high compression ratios), the stock manifold may become a bottleneck. In such cases, an aftermarket manifold with larger ports or a different design may be necessary to prevent power losses.

3. **Compatibility with Non-Stock Engines**

While the 6867680 fits the 912, 912S, and 914, it may not be suitable for heavily modified or rebuilt engines with altered cylinder head configurations, different valve sizes, or aftermarket cylinder heads. Always verify compatibility before purchasing.

4. **Quality Variability in Aftermarket Parts**

If you purchase a third-party version of this manifold (rather than an authentic Rotax part), there is a risk of receiving a lower-quality duplicate. Counterfeit or poorly made replicas may have inferior materials, poor machining, or leaks, which could compromise performance and reliability.

5. **Installation Challenges with Other Mods**

If your engine already has other modifications (e.g., a different throttle body, intercooler, or exhaust system), integrating the Rotax manifold may require additional adjustments or adapters, adding complexity to the installation process.

6. **Depreciation and Resale Value**

Like many performance parts, intake manifolds may lose value over time, especially if the engine is heavily modified. If you plan to sell the vehicle later, the return on investment for this part may be limited compared to more universally desirable upgrades.

7. **Potential for Leaks or Wear**

Over time, intake manifolds can develop cracks, leaks, or wear especially in high-performance applications where thermal and mechanical stress is increased. While the Rotax 6867680 is durable, it is not immune to wear, and regular inspections may be necessary.

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The Rotax 6867680 intake manifold is a **highly recommended upgrade or replacement part** for owners of the 912, 912S, or 914 engines, particularly if you are looking for a **direct, reliable, and performance-focused solution**. Its compatibility, durability, and ease of installation make it a practical choice for both maintenance and mild performance enhancements. However, if your engine is heavily modified or you are pursuing extreme power gains, you may need to explore aftermarket alternatives for better airflow optimization.

For most stock or lightly modified applications, the Rotax 6867680 is an excellent investment that balances cost, quality, and performance benefits.

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- You need a **direct replacement** for a damaged or worn manifold.

- You want to **improve airflow and throttle response** without major modifications.

- Your engine is **stock or lightly modified** (e.g., minor camshaft upgrades, stock tuning).

- You prioritize **reliability, fitment, and ease of installation**.

- Your engine is **heavily modified** (e.g., turbocharged, aggressive camshafts, aftermarket cylinder heads).

- You are pursuing **high-performance racing or extreme power gains**.

- You prefer **customizable or high-flow aftermarket manifolds** for better tuning flexibility.

For most enthusiasts, the Rotax 6867680 is a **solid choice** that delivers measurable performance improvements with minimal hassle. Always verify compatibility with your specific engine configuration before purchasing.

Details:

PLUMSTEAD AVE, LANSDOWNE PA 19050. PART NUMBER: 6867 689/6867 680.

part #: 6867680 prices

• $79.95-$85.00

specifications engineaviatio:

• brand: Rotax
• mpn: 6867680
• part type: Intake Cylinder Engine Manifold
• country of origin: Austria

payments engineaviatio:

• wallet: Paypal
• credit card: Diners-club
• other

returns engineaviatio:

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

offer engineaviatio:

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

general engineaviatio:

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

seller engineaviatio:

• city: Lansdowne, Pennsylvania
• # reviews: 29088
• rating: 99.7%

shipping engineaviatio:

• type: Fixed
• class: Standard
• service: UPS Ground
• cost: $0.00
• carrier: UPS
• transit: 4-8 Days

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