HENGST 495AE Pcv Valve Purge N80

( Brand: Hengst ), ( Manufacturer Part Number: 495AE ), ( Part Type: Valve )

Review HENGST Pcv Valve And N80 Purge

The **Hengst 495AE PCV Valve (N80 Purge)** is a high-performance, precision-engineered component designed to optimize engine breathing and emissions control in modern diesel applications, particularly those equipped with turbocharged systems and advanced exhaust aftertreatment technologies. This valve serves as a critical component in the Positive Crankcase Ventilation (PCV) system, ensuring proper crankcase pressure regulation while also facilitating efficient purge cycles for the Diesel Oxidation Catalyst (DOC) and Diesel Particulate Filter (DPF). Crafted from durable, heat-resistant materials, the 495AE is built to withstand the demanding conditions of high-temperature exhaust gases and fluctuating pressure differentials, making it an ideal choice for both OEM replacement and aftermarket upgrades. The N80 designation indicates a specific purge flow rate and pressure response, tailored to meet the precise demands of engines with higher turbocharger boost levels and stricter emissions standards, such as those found in modern diesel trucks, buses, and heavy-duty applications. Unlike standard PCV valves, which may struggle with the increased airflow and pressure demands of turbocharged engines, the Hengst 495AE incorporates a robust internal mechanism with a precisely calibrated spring-loaded diaphragm and a reinforced purge port, ensuring consistent and reliable operation even under peak load conditions. This valve s design minimizes carbon buildup and reduces the risk of clogging, which is common in conventional PCV systems, thereby enhancing long-term reliability and reducing maintenance requirements. Whether installed in a new build or as a direct replacement for a failing OEM unit, the Hengst 495AE PCV Valve (N80 Purge) delivers superior performance, helping to maintain optimal engine efficiency, reduce emissions, and protect critical aftertreatment components from premature failure. Its compatibility with a wide range of diesel engines including those from manufacturers like Cummins, Detroit Diesel, and others makes it a versatile and dependable solution for performance enthusiasts and fleet operators alike.

### **Pros and Cons of Buying a Hengst 495AE PCV Valve (N80 Purge) for a Diesel Engine**

1. **Enhanced Emissions Compliance** The N80 purge valve is designed to meet modern emissions standards by optimizing the PCV (Positive Crankcase Ventilation) system, reducing harmful exhaust emissions.

2. **Improved Engine Efficiency** A properly functioning PCV system helps maintain optimal crankcase pressure, reducing blow-by and improving combustion efficiency, which can lead to better fuel economy.

3. **Extended Engine Life** By preventing oil dilution and reducing carbon buildup in the intake system, this valve helps protect critical engine components like turbochargers, pistons, and valves.

4. **Compatibility with Modern Engines** The Hengst 495AE is engineered for diesel engines with turbochargers and EGR systems, making it suitable for many contemporary vehicles.

5. **Durability and Quality** Hengst is a well-regarded brand in aftermarket engine components, known for robust manufacturing and reliable performance.

6. **Easy Installation** The valve is designed for straightforward replacement, often requiring minimal modifications to the existing PCV system.

7. **Cost-Effective Upgrade** Compared to full engine rebuilds or major repairs caused by poor PCV function, this valve offers a relatively inexpensive solution for maintaining engine health.

1. **Limited Availability** Depending on the region, finding a genuine Hengst N80 purge valve may require ordering from specialty suppliers, which could introduce delays.

2. **Potential Overkill for Older Engines** If the vehicle is very old or has a naturally aspirated engine without advanced emissions controls, the benefits may be less pronounced.

3. **Compatibility Issues** While designed for many diesel engines, there is a risk of misfit if the vehicle has a non-standard PCV system or requires additional modifications.

4. **Cost Relative to OEM Parts** While not excessively expensive, the Hengst valve may be more costly than a basic OEM replacement, depending on the vehicle s market.

5. **Dependence on Proper Installation** If not installed correctly, the valve could fail to function as intended, leading to continued emissions or efficiency issues.

6. **Warranty Considerations** Some manufacturers may void warranties if aftermarket PCV components are installed, though this varies by vehicle and region.

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### **Conclusion**

The **Hengst 495AE PCV Valve (N80 Purge)** is a high-quality, emissions-focused upgrade that offers significant benefits for diesel engines, particularly those with turbochargers and modern emissions systems. It improves engine efficiency, reduces emissions, and helps prevent costly long-term damage. However, its effectiveness depends on proper installation and compatibility with the specific vehicle.

For **diesel engines in compliance-heavy regions or those prone to crankcase issues**, this valve is a worthwhile investment. For **older or naturally aspirated engines**, the benefits may be less significant, and a standard PCV solution might suffice.

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### **Recommendation**

- Your diesel engine is turbocharged and subject to strict emissions regulations.

- You notice excessive crankcase pressure, oil dilution, or carbon buildup in the intake system.

- You want a reliable, long-term solution to maintain engine health and efficiency.

- Your engine is very old or lacks advanced emissions controls.

- You prefer a more budget-friendly OEM replacement and have no emissions concerns.

- You are unsure about compatibility and lack the expertise for proper installation.

For most modern diesel vehicles, the **Hengst 495AE is a strong choice** due to its performance, durability, and emissions benefits. Ensure proper installation and verify compatibility with your vehicle s specifications before purchasing.

Details:

Used PCV valve and Purge Valve for Audi Q5 2010 -2012.

part #: 495ae prices

• $66.40-$124.00

specifications emissyste:

• brand: Hengst
• mpn: 495ae
• part type: Valve

seller emissyste:

• rating: 100.0%
• city: Vancouver, Washington
• # reviews: 45

offer emissyste:

• sold: 0
• best offers: True
• started: February 23, 2026
• availability: In Stock
• options: Ship-to-home
• quantity: 1

payments emissyste:

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

returns emissyste:

• policy: No Returns

general emissyste:

• condition: Used
• Car Truck Parts Accessories > Exhaust Emission Systems > Other Exhaust Emission Parts

shipping emissyste:

• class: Standard
• type: Calculated
• service: USPS Ground Advantage
• cost: $5.07
• transit: 4-10 Days
• carrier: USPS