GATES EMH979 Engine Crankcase Vent Valve

( Brand: Gates ), ( Manufacturer Part Number: EMH979 ), ( Part Type: Valve Engine Vent ), ( Parts Included: Only Part Reference 0 On The Diagram Is Included )

Review GATES Genuine Engine Crankcase Vent Valve

The **Gates EMH979 Engine Crankcase Vent Valve** is a precision-engineered component designed to maintain optimal airflow and pressure regulation within an internal combustion engine s crankcase system. This high-performance vent valve is specifically crafted to prevent the escape of blow-by gases such as unburned fuel, combustion byproducts, and oil vapors while allowing controlled ventilation to reduce crankcase pressure buildup. Constructed from durable materials, including a robust housing and a spring-loaded diaphragm mechanism, the EMH979 ensures reliable operation under demanding conditions, making it an ideal choice for high-performance, turbocharged, or forced-induction applications where crankcase integrity is critical. Its compact yet efficient design minimizes space constraints while maximizing functionality, allowing it to seamlessly integrate into modern engine bay layouts. The valve s precision-engineered diaphragm operates with minimal resistance, ensuring smooth airflow while effectively trapping contaminants, thereby protecting critical engine components from harmful deposits. Whether installed in high-revving sports engines, heavy-duty diesel applications, or performance-oriented vehicles, the Gates EMH979 delivers consistent performance, reducing oil consumption, preventing sludge buildup, and extending engine life. Built to meet stringent industry standards, this vent valve is a trusted solution for enthusiasts and professionals seeking a reliable, long-lasting component that enhances engine efficiency and longevity.

### **Pros and Cons of buying a Gates EMH979 Engine Crankcase Vent Valve**

The Gates EMH979 is a high-quality crankcase ventilation (PCV) valve designed for modern engines, particularly those with turbocharging or high-performance applications. Its advantages include:

1. **Enhanced Engine Protection** The valve regulates blow-by gases efficiently, preventing harmful pressure buildup in the crankcase. This reduces oil dilution, carbon buildup, and potential damage to the valve train or turbocharger.

2. **Improved Emissions Control** By properly routing crankcase gases through the intake system, it helps maintain cleaner exhaust emissions, which is crucial for vehicles with stricter emissions standards.

3. **Compatibility with High-Performance Engines** The EMH979 is engineered to handle the demands of turbocharged or forced-induction engines, where blow-by can be more aggressive than in naturally aspirated setups.

4. **Durability and Reliability** Gates is a well-known manufacturer of automotive aftermarket parts, and this valve is built to last, often outperforming OEM or generic alternatives in terms of longevity.

5. **Easy Installation** It is designed to fit standard PCV system setups, requiring minimal modifications. Installation typically involves replacing the old valve without additional wiring or plumbing changes.

6. **Cost-Effective Long-Term Solution** While the upfront cost may be higher than some basic PCV valves, its performance and durability can prevent costly engine repairs down the line.

7. **Reduced Oil Consumption** By controlling blow-by, it helps minimize oil burning, which can extend engine life and reduce maintenance frequency.

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1. **Higher Initial Cost** Compared to basic or generic PCV valves, the Gates EMH979 is more expensive. For budget-conscious buyers, this may be a significant factor, especially if the vehicle is older or lower in value.

2. **Potential Overkill for Naturally Aspirated Engines** If the vehicle is not turbocharged or high-performance, a more basic PCV valve might suffice, making the Gates valve an unnecessary premium upgrade.

3. **Compatibility Concerns** While Gates provides compatibility lists, some aftermarket or modified engines may require additional tuning or modifications to work optimally with this valve. Always verify fitment before purchasing.

4. **Limited Availability in Some Regions** Depending on location, the Gates EMH979 may not be as widely stocked as other brands, potentially requiring special ordering or longer wait times.

5. **Risk of Incorrect Installation** If not installed properly (e.g., incorrect routing or sealing), the valve may fail to function as intended, leading to potential engine issues. Careful installation is essential.

6. **Potential for Counterfeit Products** As with many high-quality aftermarket parts, there is a risk of purchasing counterfeit Gates valves. Buying from authorized dealers or reputable sellers can mitigate this risk.

7. **Noisy Operation in Some Cases** In rare instances, improperly sized or installed PCV valves (including high-performance ones) can cause slight hissing or rattling, though the Gates EMH979 is generally well-designed to minimize this.

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The Gates EMH979 crankcase vent valve is an excellent choice for vehicles with turbocharged or high-performance engines, offering superior protection, emissions control, and longevity. Its advanced design justifies the higher cost for those who prioritize engine health and performance. However, for naturally aspirated or budget-oriented applications, a more basic PCV valve may be sufficient.

If you are running a turbocharged engine, modifying a stock engine, or experiencing crankcase pressure issues, the Gates EMH979 is highly recommended. For standard applications, weigh the cost against potential benefits to determine if it is worth the investment.

- Your vehicle is turbocharged or high-performance.

- You are experiencing crankcase pressure problems, oil burning, or turbocharger fouling.

- You want a durable, reliable valve that extends engine life.

- You are comfortable paying a premium for quality components.

- Your engine is naturally aspirated and runs smoothly without issues.

- You are on a tight budget and can find a compatible OEM or generic valve.

- You are unsure about compatibility and cannot verify fitment.

Always verify the valve s compatibility with your specific engine and consult a mechanic if needed before purchasing.

Details:

Parts must be resalable and in the original packaging. Genuine Gates Engine Crankcase Vent Valve EMH979: Parts. Shipping Carrier substitutions may be made at our determination in an attempt to reduce shipping cost the customer. Electrical parts are not returnable.

part #: emh979 prices

• $19.18-$34.19

specifications emissyste:

• brand: Gates
• mpn: Emh979
• part type: Valve Engine Vent
• parts included: Only Part Reference 0 On The Diagram Is Included

offer emissyste:

• started: March 5, 2026
• availability: In Stock
• sold: 0
• quantity: 2
• options: Ship-to-home

seller emissyste:

• # reviews: 46
• rating: 87.0%
• city: Cockeysville, Maryland

returns emissyste:

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

general emissyste:

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

shipping emissyste:

• service: Standard
• class: Standard
• transit: 4-7 Days
• cost: $7.99
• type: Fixed

payments emissyste:

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

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