GATES EMH704 Engine Crankcase Breather Hose
( Brand: Gates ), ( Manufacturer Part Number: EMH704 ), ( Manufacturer Warranty: Other ), ( Type: Engine Crankcase Breather Hose )
Review GATES Engine Crankcase Breather Hose
The **Gates EMH704 Engine Crankcase Breather Hose** is a high-performance, precision-engineered component designed to ensure optimal airflow and pressure regulation within an engine s crankcase system. Crafted from durable, heat-resistant **EPDM (Ethylene Propylene Diene Monomer) rubber**, this breather hose is engineered to withstand extreme temperatures, chemical exposure, and mechanical stress, making it an ideal choice for both high-performance and heavy-duty applications. Its reinforced construction prevents kinking, cracking, or premature degradation, even under prolonged exposure to engine heat and oil vapors, thereby extending the lifespan of critical engine components and maintaining peak efficiency.
This breather hose features a **tight-fitting, interference-fit design** with smooth, seamless walls that minimize internal resistance, allowing for unrestricted airflow while preventing oil leaks and contamination. The hose s **flexible yet robust construction** ensures a secure connection to intake manifolds, oil separators, or other breather systems, reducing the risk of leaks and maintaining consistent vacuum levels. Whether installed in a stock engine or a heavily modified performance setup, the EMH704 delivers reliable performance, helping to reduce carbon buildup, improve combustion efficiency, and lower emissions by effectively venting crankcase gases away from sensitive engine areas.
Ideal for a wide range of applications, including **muscle cars, trucks, performance street machines, and even marine and industrial engines**, the Gates EMH704 is a trusted upgrade for enthusiasts and professionals seeking a dependable, long-lasting solution. Its **universal compatibility** with common breather system setups such as those found in Ford, Chevrolet, Dodge, and other popular engine platforms makes it an easy and cost-effective replacement for worn or failing OEM hoses. With Gates reputation for quality and durability, this breather hose is more than just a replacement part; it s a performance-enhancing component that helps keep engines running cleaner, cooler, and more efficiently for thousands of miles.
**Pros and Cons of buying a Gates EMH704 Engine Crankcase Breather Hose**
The Gates EMH704 is a replacement crankcase breather hose commonly used in automotive applications, particularly for engines requiring a PCV (Positive Crankcase Ventilation) system. Below is a detailed analysis of its advantages and disadvantages.
### **Pros**
1. **High Quality and Durability**
The Gates brand is well-known for manufacturing high-quality automotive parts, including hoses, filters, and seals. The EMH704 is designed to withstand engine heat, oil mist, and vacuum pressures, reducing the risk of premature failure. Its reinforced construction helps prevent cracking, splitting, or collapsing over time, which is critical in engines where breather hoses are exposed to harsh conditions.
2. **Compatibility and Fit**
Gates products are engineered to meet or exceed OEM (Original Equipment Manufacturer) specifications. The EMH704 is specifically designed for certain engine applications, ensuring a proper fit without the need for excessive modification. This reduces the risk of leaks or improper sealing, which can lead to oil consumption or contamination of the intake system.
3. **Improved Engine Performance and Longevity**
A properly functioning crankcase breather hose helps maintain optimal crankcase pressure, preventing oil leaks, blow-by gases from entering the intake, and reducing carbon buildup on intake valves. By maintaining a clean PCV system, the engine operates more efficiently, reducing wear on internal components and extending its lifespan.
4. **Easy Installation**
The EMH704 is typically designed for straightforward installation, often requiring only basic tools. Gates provides clear installation instructions, and the hose is usually pre-formed to fit the engine bay without excessive stretching or cutting. This makes it a convenient upgrade or replacement option for DIY mechanics.
5. **Cost-Effective Long-Term Solution**
While the upfront cost may be slightly higher than some generic aftermarket alternatives, the durability and reliability of the Gates EMH704 often translate to fewer replacements over time. This can save money in the long run by avoiding repeated failures or damage to other engine components.
6. **Warranty and Support**
Gates offers warranties on many of its products, providing peace of mind in case of defects. Additionally, Gates has a strong reputation for customer support, making it easier to find replacement parts or assistance if issues arise during installation or use.
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### **Cons**
1. **Higher Upfront Cost**
Compared to generic or no-name breather hoses, the Gates EMH704 is typically more expensive. While this cost is often justified by quality, budget-conscious buyers may opt for cheaper alternatives, especially if they are unsure about the long-term reliability of the engine s breather system.
2. **Limited Availability in Some Regions**
Depending on location, the Gates EMH704 may not be as widely stocked as other brands. This could require ordering online or visiting specialty automotive parts stores, which may not be convenient for everyone. Additionally, stock availability can vary, leading to potential delays in purchase.
3. **Potential Overkill for Mild Applications**
In some cases, especially on older or less demanding engines, a high-quality breather hose like the Gates EMH704 may be more than necessary. If the engine s breather system is rarely stressed, a slightly less expensive hose might suffice without compromising performance.
4. **Installation Challenges in Tight Engine Bays**
While the EMH704 is designed for ease of installation, some engine bays particularly in older or compact vehicles may present challenges. The hose may need to be routed carefully to avoid interference with other components, and in tight spaces, installation could require patience or additional tools.
5. **Compatibility Concerns with Modified Engines**
If the engine has been modified (e.g., turbocharged, supercharged, or tuned), the stock breather hose may not be sufficient for the increased stress. While the Gates EMH704 is robust, it may not be explicitly rated for extreme modifications. In such cases, a specialized breather system (e.g., a PCV delete or high-flow breather) might be necessary.
6. **Potential for Counterfeit Products**
As with many high-demand automotive parts, counterfeit Gates EMH704 hoses may enter the market. These fakes often lack the quality and durability of genuine Gates products, leading to early failure. Buyers should purchase from reputable dealers or authorized sellers to avoid counterfeit items.
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### **Conclusion**
The Gates EMH704 engine crankcase breather hose is a premium choice for those seeking reliability, durability, and compatibility with their vehicle s PCV system. Its reinforced construction, ease of installation, and potential to improve engine longevity make it a strong option for both OEM replacements and upgrades. However, the higher cost and potential availability issues may deter budget-conscious buyers or those in regions with limited access to Gates products.
For most drivers who prioritize long-term performance and want to avoid the hassle of frequent replacements, the Gates EMH704 is a worthwhile investment. It is particularly well-suited for high-mileage vehicles, turbocharged engines, or applications where the breather system is subjected to stress. If cost is a major concern, a thorough comparison with other high-quality brands (such as WIX or Mann-Filter) may be advisable.
### **Recommendation**
If you are replacing a failing or worn-out crankcase breather hose and your engine is under moderate to high stress (e.g., turbocharged, high mileage, or frequently driven in stop-and-go traffic), **the Gates EMH704 is highly recommended**. Its durability and compatibility make it a reliable choice that can contribute to better engine health.
For engines with minimal stress or those on a tight budget, consider comparing the EMH704 with other reputable brands to ensure the best value. Always verify compatibility with your specific engine model and consult your vehicle s service manual or a trusted mechanic if unsure. Purchasing from an authorized dealer or a well-reviewed online retailer will help avoid counterfeit products and ensure you receive the genuine Gates product.
Details:
The image USUALLY shows all the pieces and qty included with part. This part fits vehicles made in the following years 2006 ,2007,2008,2009,2010,2011. Engine Crankcase Breather Hose. 12590670, EMH704.
FINISH MATERIAL COLOR shown in the listing image will often vary from actual part shipped. Information like which side a part fits LEFT or RIGHT and specific vehicle attributes Transmission, AWD/RWD, other exclusions are included for your information in this LEFT COLUMN.
part #: emh704 prices
- $21.95-$22.68
specifications emissyste:
- brand: Gates
- mpn: Emh704
- manufacturer warranty: Other
- type: Engine Crankcase Breather Hose
payments emissyste:
- credit card: Diners-club
- wallet: Paypal
- other
shipping emissyste:
- type: Fixed
- service: FedEx Ground / FedEx Home Delivery
- class: Standard
- carrier: FedEx
- cost: $20.00
- transit: 3-9 Days
general emissyste:
- Car Truck Parts Accessories > Exhaust Emission Systems > Other Exhaust Emission Parts
- condition: New
offer emissyste:
- availability: In Stock
- options: Ship-to-home
- started: May 20, 2026
- sold: 0
- quantity: 1
seller emissyste:
- city: Santa Fe Springs, California
- rating: 99.6%
- # reviews: 22511
returns emissyste:
- paid by: Seller
- time: 30 Days
- policy: Returns Accepted
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