LOCKWOOD AVIATION SUPPLY TL912PRK-U Pressure Purge Rotax Kit Engine

( Brand: Lockwood Aviation Supply ), ( Manufacturer Part Number: TL912PRK-U ), ( Part Type: Pressure Engine )

Review LOCKWOOD AVIATION SUPPLY Pressure Purge Kit Rotax 912 Engine

The **Lockwood Supply TL912PRK-U Pressure Purge Kit** is a meticulously engineered solution designed specifically for the high-performance demands of the **Rotax 912 engine**, ensuring optimal fuel system efficiency, emissions compliance, and long-term reliability. This kit is a critical upgrade for enthusiasts and racers seeking to enhance their engine s performance while adhering to modern emissions standards, particularly those governed by **EPA and CARB regulations**. At its core, the TL912PRK-U integrates a **high-flow pressure purge valve**, a **precision-machined purge line**, and a **durable mounting bracket**, all crafted from materials that withstand the extreme conditions of high-RPM operation and thermal cycling. The purge valve itself is engineered with a **sealed, non-bleed design**, eliminating the risk of fuel vapor leaks while maintaining consistent purge flow, which is essential for preventing fuel vapor buildup in the crankcase an issue that can lead to reduced power, rough idle, or even catastrophic engine failure. The kit s purge line is constructed from **high-temperature-resistant tubing**, ensuring it remains flexible yet rigid under the engine s heat and vibration, while the mounting bracket is strategically positioned to minimize interference with other components, offering a clean, professional installation. Whether retrofitting an existing Rotax 912 or incorporating it into a new build, this kit is a game-changer for maintaining peak engine performance, especially in applications where **EPA or CARB compliance** is mandatory, such as street-legal race cars or modified aircraft engines. Its straightforward yet robust design makes it an ideal choice for mechanics and builders who demand both performance and reliability without compromising on ease of installation.

The **Lockwood Supply TL912PRK-U Pressure Purge Kit** is designed to improve fuel system performance and reduce vapor lock in the Rotax 912 engine by maintaining positive fuel pressure when the engine is off. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

---

### **Pros of the TL912PRK-U Pressure Purge Kit**

1. **Reduces Vapor Lock Risk**

The kit helps maintain fuel pressure in the system even when the engine is not running, preventing fuel vaporization and potential stalling or hard starting. This is particularly useful in high-temperature or high-altitude conditions where vapor lock is more likely to occur.

2. **Improves Cold Start Performance**

By keeping fuel under pressure, the kit can help ensure a more consistent fuel supply during cold starts, reducing the likelihood of a weak or no-start condition.

3. **Enhances Fuel System Reliability**

The kit is designed to work with the Rotax 912 s fuel system, providing a more stable fuel delivery mechanism. This can lead to smoother operation and fewer issues related to fuel starvation or air pockets in the lines.

4. **Easy to Install**

The kit is relatively straightforward to install, requiring minimal modifications to the existing fuel system. It typically involves connecting a small solenoid valve and a pressure regulator to the fuel line, which can be done without extensive mechanical experience.

5. **Compatibility with Rotax 912 Engines**

The kit is specifically engineered for the Rotax 912 series, ensuring that it integrates seamlessly with the engine s fuel delivery system. This reduces the risk of compatibility issues that might arise with aftermarket parts designed for other engines.

6. **Cost-Effective Solution**

Compared to more extensive fuel system overhauls or upgrades, the TL912PRK-U is a relatively inexpensive solution to address common fuel-related issues. It can extend the life of the existing fuel system and reduce the need for costly repairs.

7. **Minimal Maintenance**

Once installed, the kit requires little to no maintenance. The solenoid valve and pressure regulator are designed to be durable and long-lasting, provided they are used within their intended parameters.

---

### **Cons of the TL912PRK-U Pressure Purge Kit**

1. **Additional Components and Wiring**

The kit adds complexity to the fuel system with a solenoid valve and electrical wiring. This means you ll need to ensure that the solenoid is properly wired to a reliable power source (such as the ignition switch or a dedicated circuit) to function correctly. Poor wiring can lead to electrical issues or failure of the kit.

2. **Potential for Electrical Failures**

If the solenoid valve fails or is not properly powered, it can result in a loss of fuel pressure, leading to the same vapor lock issues the kit was meant to solve. This requires regular checks to ensure the electrical system is functioning.

3. **Limited Impact on Severe Fuel System Issues**

While the kit helps with vapor lock and cold starts, it does not address deeper issues such as clogged fuel injectors, a failing fuel pump, or a damaged fuel filter. If these underlying problems exist, the kit may provide temporary relief but not a permanent solution.

4. **Requires Proper Tuning**

Installing the kit may necessitate adjustments to the engine s fueling map or ignition timing, especially if the kit alters the fuel delivery characteristics. This might require consultation with a tuner or adjustments in the engine management system (if equipped).

5. **Not a Universal Fix for All Conditions**

While the kit is effective for many scenarios, extreme conditions (such as prolonged exposure to high temperatures or high altitudes) might still pose challenges. In such cases, additional modifications (like a larger fuel tank or a more robust cooling system) may be needed.

6. **Potential for Over-Pressurization**

If the pressure regulator is not set correctly or if there is a failure in the system, it could lead to over-pressurization of the fuel system, potentially causing leaks or damage to fuel lines or injectors.

7. **Installation Skill Dependency**

While the installation is generally straightforward, improper installation such as incorrect wiring, leaks in the fuel lines, or misalignment of components can render the kit ineffective or even harmful. Users without mechanical experience may struggle with installation.

---

### **Conclusion**

The **Lockwood Supply TL912PRK-U Pressure Purge Kit** is a valuable addition for Rotax 912 engine owners looking to mitigate vapor lock, improve cold starts, and enhance overall fuel system reliability. Its pros such as ease of installation, cost-effectiveness, and specific compatibility with the Rotax 912 make it a practical choice for addressing common fuel-related issues. However, the cons, particularly the added electrical complexity, potential for electrical failures, and the need for proper tuning, require careful consideration. The kit is most beneficial for users who experience vapor lock or cold-starting problems and are willing to invest the time in proper installation and maintenance.

---

### **Recommendation**

If you are experiencing **vapor lock, inconsistent cold starts, or fuel starvation issues** in your Rotax 912 engine, the **TL912PRK-U Pressure Purge Kit** is worth considering. It is a targeted solution that can significantly improve fuel system performance with minimal long-term maintenance. However, ensure that:

- You have the basic mechanical and electrical skills to install and wire the kit correctly.

- You consult with a tuner or mechanic to verify that the kit integrates well with your engine s existing setup and fueling map.

- You regularly inspect the solenoid valve and wiring for any signs of wear or failure.

For users who are not comfortable with electrical work or have more severe fuel system issues (e.g., failing injectors or pump), addressing those problems first may yield better long-term results. In such cases, pairing the kit with a professional inspection of the fuel system could be the most effective approach.

**Final Verdict:** The TL912PRK-U is a solid choice for Rotax 912 owners dealing with fuel-related reliability issues, provided it is installed and maintained properly.

Details:

For engine with newer system fittings which have the convex end on tank and concave fitting.

specifications engineaviatio:

• brand: Lockwood Aviation Supply
• mpn: Tl912prk-u
• part type: Pressure Engine

seller engineaviatio:

• # reviews: 143
• rating: 100.0%
• city: Boulder, Colorado

offer engineaviatio:

• options: Ship-to-home
• availability: In Stock
• quantity: 1
• started: March 3, 2026
• sold: 0

shipping engineaviatio:

• carrier: USPS
• cost: $0.00
• transit: 4-10 Days
• service: USPS Ground Advantage
• class: Standard
• type: Calculated

returns engineaviatio:

• policy: No Returns

general engineaviatio:

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

payments engineaviatio:

• wallet: Google-pay
• other
• credit card: Mastercard

Lockwood Aviation Supply TL912PRK Is Similar To:

• 881920 Rotax Valve Cover Set From Lockwood (13.7% similar) Save 20 on this o-ring set...(April 22nd, 2019)