GATES EMH917 Engine Crankcase Vent Valve

( Brand: Gates ), ( Manufacturer Part Number: EMH917 ), ( Part Type: Valve Engine Vent ), ( Epid: 26037531333 )

Review GATES Engine Crankcase Vent Valve

The **Gates EMH917 Engine Crankcase Vent Valve** is a precision-engineered component designed to maintain optimal airflow and pressure balance within an internal combustion engine s crankcase, ensuring long-term reliability and performance. This high-quality vent valve is specifically engineered to regulate the flow of crankcase gases, preventing harmful blow-by from escaping into the atmosphere while allowing controlled ventilation to reduce internal pressure buildup. Constructed from durable materials, including a robust housing and a finely calibrated valve mechanism, the EMH917 is built to withstand the demanding conditions of high-performance and heavy-duty applications, including marine, industrial, and automotive engines. Its advanced design incorporates a spring-loaded diaphragm or piston system that dynamically adjusts to varying engine loads, ensuring consistent pressure regulation across a wide range of operating speeds and temperatures. This not only enhances engine efficiency by minimizing oil consumption and carbon buildup but also contributes to reduced emissions by containing volatile hydrocarbons within the crankcase. Ideal for use in engines equipped with positive crankcase ventilation (PCV) systems, the EMH917 is a critical component for maintaining engine health, particularly in environments where excessive crankcase pressure could lead to leaks, oil loss, or premature wear. Whether integrated into a modern high-output V8, a rugged diesel powerplant, or a marine propulsion system, this vent valve delivers dependable performance, making it a trusted choice for mechanics and engineers seeking to optimize engine longevity and operational integrity.

### Pros and Cons of buying a Gates EMH917 Engine Crankcase Vent Valve

The Gates EMH917 is a high-quality crankcase ventilation (PCV) valve designed for modern engines, particularly those with turbocharging or high-performance applications. Its advantages include:

1. **Improved Engine Efficiency** The valve helps maintain proper crankcase pressure, reducing blow-by gases and preventing oil dilution in the intake system. This can enhance combustion efficiency and reduce emissions.

2. **Enhanced Turbocharger Protection** For turbocharged engines, the EMH917 is engineered to prevent excessive backpressure, which can damage turbochargers by forcing oil into the intake or causing overheating.

3. **Durability and Reliability** Gates is a well-known manufacturer of automotive components, and this valve is built to withstand high temperatures and prolonged use, reducing the risk of premature failure.

4. **Compatibility with High-Performance Engines** The EMH917 is often recommended for engines with forced induction (turbo/supercharged) or high RPM applications, where standard PCV valves may struggle to handle increased blow-by.

5. **Easy Installation** It is designed for straightforward replacement, requiring minimal tools and time. The valve typically fits standard PCV hose connections without modification.

6. **Reduced Oil Consumption** By controlling crankcase pressure, the valve helps minimize oil loss through the PCV system, which can be beneficial for engines prone to oil burning.

7. **OEM-Quality Alternative** In many cases, the Gates EMH917 serves as a direct replacement for OEM PCV valves, ensuring proper function without compromising performance.

---

1. **Cost** Compared to generic or aftermarket PCV valves, the Gates EMH917 is more expensive. For basic applications, a lower-cost alternative might suffice.

2. **Overkill for Stock Engines** If the engine is naturally aspirated and not prone to excessive blow-by, a standard PCV valve may be sufficient, making the Gates valve unnecessary.

3. **Potential for Over-Ventilation** In some cases, an overly aggressive PCV valve (like the EMH917) could allow too much crankcase gas into the intake, leading to minor performance losses or increased carbon buildup on intake valves.

4. **Limited Availability** Depending on the region, finding the Gates EMH917 may require ordering from specialty suppliers rather than a local auto parts store.

5. **Not Universal** While it fits many applications, the EMH917 is not compatible with every engine. Always verify compatibility with the vehicle s specifications before purchasing.

6. **Maintenance Dependency** Like any PCV system, the valve must be inspected periodically. If the intake hose or filter becomes clogged, the valve s effectiveness may be reduced.

7. **Potential for Misapplication** Installing the wrong PCV valve (e.g., one designed for a turbo engine on a non-turbo engine) could lead to improper ventilation, affecting engine performance or emissions.

---

The Gates EMH917 crankcase vent valve is a superior choice for turbocharged or high-performance engines where standard PCV valves may fail to manage blow-by effectively. Its durability, turbo protection, and efficiency improvements make it a worthwhile investment for forced-induction applications. However, for naturally aspirated engines running under stock conditions, a more budget-friendly PCV valve might be adequate.

If your engine experiences excessive oil consumption, turbocharger issues, or poor performance due to crankcase pressure problems, the EMH917 is a reliable upgrade. Always ensure compatibility with your specific engine and consult a mechanic if unsure.

- Your engine is turbocharged or supercharged.

- You notice signs of oil burning, turbocharger fouling, or excessive crankcase pressure.

- You prioritize long-term reliability and engine protection.

- Your engine is naturally aspirated and runs smoothly under normal conditions.

- You are on a tight budget and the engine does not show signs of PCV-related issues.

For most high-performance or turbocharged applications, the Gates EMH917 is the recommended choice due to its proven performance and durability.

Details:

Engine Crankcase Vent Valve Gates EMH917 Valve: Part Number: Manufacturer. Engineered using the latest technology to ensure product lasts longer in service. Designed specifically for trucks, trailers, and buses. Made of high-quality components for durability, reliability, and performance.

Engineered with a factory-like design for effortless installation, ensuring perfect match your vehicle. Manufactured following strict OE standards to work like the original component.

part #: emh917 prices

• $50.02-$63.55

specifications emissyste:

• brand: Gates
• mpn: Emh917
• part type: Valve Engine Vent
• epid: 26037531333

returns emissyste:

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

general emissyste:

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

shipping emissyste:

• cost: $0.00
• type: Fixed
• service: Standard
• transit: 3-6 Days
• class: Standard

seller emissyste:

• # reviews: 65376
• rating: 99.2%
• city: Los Angeles, California

payments emissyste:

• credit card: Diners-club
• wallet: Google-pay
• other

offer emissyste:

• started: February 22, 2026
• availability: In Stock
• sold: 0
• quantity: 5
• best offers: True
• options: Ship-to-home

Gates EMH917 Is Similar To:

• 27004 Gates Crankcase Vent Hose (62% similar) ...(March 28th, 2017)
• Emh107 Gates New Engine Crankcase Breather Hose 770075689553 (54% similar) Vehicles sold outside of the USA may be different, even if they have same make and model name. Shipping labels may only be applied to a separate, outer box...(May 30th, 2018)
• Emh115 Gates New Engine Crankcase 770075623809 (55.8% similar) Vehicles sold outside of the USA may be different, even if they have same make and model name. Shipping labels may only be applied to a separate, outer box...(December 29th, 2017)
• Emh117 Gates New Engine Crankcase Breather Hose 770075681458 (54% similar) Shipping labels may only be applied to a separate, outer box. Vehicles sold outside of the USA may be different, even if they have same make and model name...(May 2nd, 2018)
• Emh129 Gates New Engine Crankcase (63% similar) Vehicles sold outside of the USA may be different, even if they have same make and model name. Shipping labels may only be applied to a separate, outer box...(November 25th, 2017)
• Emh135 Gates New Engine Crankcase (63% similar) Shipping labels may only be applied to a separate, outer box. Vehicles sold outside of the USA may be different, even if they have same make and model name...(January 8th, 2018)
• Emh140 Gates New Engine Crankcase 770075710554 (55.8% similar) Vehicles sold outside of the USA may be different, even if they have same make and model name. Shipping labels may only be applied to a separate, outer box...(November 27th, 2017)
• Emh147 Gates New Engine Crankcase 770075615491 (55.8% similar) ...(December 3rd, 2017)
• Emh156 Gates New Engine Crankcase 770075624493 (55.8% similar) Shipping labels may only be applied to a separate, outer box. Vehicles sold outside of the USA may be different, even if they have same make and model name...(November 27th, 2017)
• Emh198 Gates New Engine Crankcase 770075634256 (55.8% similar) Shipping labels may only be applied to a separate, outer box. Vehicles sold outside of the USA may be different, even if they have same make and model name...(October 8th, 2017)
• Emh200 Gates New Engine Crankcase 770075670575 (55.8% similar) Vehicles sold outside of the USA may be different, even if they have same make and model name. Shipping labels may only be applied to a separate, outer box...(December 25th, 2017)