Crank Case Breather Pipe Hose - Gates EMH659
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Product Information
Full details
The Gates EMH659 Crank Case Breather Pipe Hose is designed for automotive DIYers and technicians working on BMW engine maintenance who need a high-quality, reliable replacement for failed ventilation components. This hose provides the critical benefit of restoring efficient crankcase pressure regulation, which helps maintain engine longevity and prevents oil leaks; however, users should be aware that proper installation requires clearing existing obstructions in the surrounding ventilation system to ensure the new part functions correctly.
All features
| Model Part Number | EMH659 |
|---|---|
| Brand | Gates |
Extended Product Information
FAQs
Is the Gates EMH659 a direct replacement for my BMW?
Yes, it is designed to meet OEM specifications for specific BMW models requiring this part number.
What tools do I need for installation?
Generally, only basic hand tools or just your hands are required, as these hoses usually feature snap-on connectors.
Does this hose come with new clamps?
The EMH659 is designed to use factory-style locking mechanisms integrated into the hose ends.
How often should I check this hose?
It is recommended to inspect the breather hose during every scheduled oil change or if you notice a rough idle.
Can I use this for non-BMW vehicles?
No, this specific part is engineered exclusively for BMW engine architectures.
Troubleshooting
Hose connector will not lock into place
Ensure the connector is clean of debris and properly aligned with the port; verify that the locking tabs are not bent.
Engine still shows lean condition after install
Check that the hose is fully seated at both ends and inspect other vacuum lines in the engine bay for cracks.
Hose appears kinked after installation
Loosen the connections, rotate the hose to find the natural orientation, and re-secure.
Pros and Cons
Pros
- Meets strict OE standards for reliable engine performance
- Precision-fit design simplifies installation
- Robust construction resists premature cracking and heat damage
- Essential for preventing oil leaks and vacuum issues
Cons
- Specific to BMW engine models
- Requires proper routing to prevent kinking
- May require replacement of brittle plastic clips during installation
Setup, Compatibility & Care
Before installation, ensure the engine is cool to prevent burns. Remove the old hose by gently depressing the locking tabs on the connector ends; do not use excessive force as existing plastic components in the engine bay may be brittle. When installing the Gates EMH659, verify that the hose is routed away from sharp edges or hot exhaust components to prevent melting or premature wear. Periodically inspect the hose during oil changes for signs of oily residue or brittleness, which can indicate the need for further inspection of the entire ventilation system, including the CCV valve.