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BMW 11-15-8-661-697 Crank Vent Valve

fits make: Bmw.

11-15-8-661-697 Bmw Genuine Crank Case Vent Valve 119990

( Manufacturer Part Number: 11-15-8-661-697 ), ( Part Type: Valve Crank Vent Case ), ( Manufacturer Warranty: 1 Year ), ( Genuine Oem: Yes ), ( Universal Fitment: Direct Replacement )

Review BMW Genuine Crank Case Vent Valve

The **BMW 11-15-8-661-697 Crank Vent Valve** is a precision-engineered component designed specifically for BMW engines equipped with the **N52, N54, N55, or N57** inline-6 cylinder architectures, ensuring optimal crankcase ventilation while maintaining strict emissions compliance and engine longevity. This valve plays a critical role in the **Positive Crankcase Ventilation (PCV) system**, which regulates the flow of blow-by gases unburned fuel and combustion byproducts that escape past the piston rings back into the intake manifold, preventing pressure buildup in the crankcase and reducing oil contamination. Crafted from high-quality **metal or durable plastic** (depending on the application), the valve features a **precision-machined internal mechanism** that allows controlled airflow while resisting wear from oil and combustion residues, which can otherwise clog or degrade standard aftermarket alternatives. Its **threaded or flange-mounted design** ensures a secure, leak-free installation, often requiring a **torque specification of 8 10 Nm** to prevent overtightening, which could damage the valve seat or intake manifold gasket. This part is particularly vital for **high-performance or turbocharged applications**, where increased blow-by and engine stress demand a robust, factory-spec solution to avoid symptoms like **oil leaks, white smoke from the exhaust, or a failing check valve indicator light**. Replacement is typically recommended during **engine rebuilds, oil changes with significant mileage, or when diagnosing PCV system malfunctions**, as failure can lead to **reduced engine efficiency, increased emissions, or even catastrophic engine damage** over time. For optimal performance, it is essential to use an **OEM-quality or BMW-approved equivalent**, as subpar aftermarket valves may fail prematurely or introduce leaks, compromising both emissions compliance and engine health.

**Pros and Cons of Buying a BMW Crank Vent Valve (Part Numbers: 11 15 8 661 697, 11 15 8 697, etc.)**

### **Pros**

1. **Prevents Oil Contamination** The crank vent valve (also called a PCV or crankcase ventilation valve) regulates pressure in the engine crankcase, preventing oil from being sucked into the intake system. A faulty valve can lead to oil buildup in the intake, causing misfires, poor performance, or even engine damage.

2. **Cost-Effective Repair** Replacing the valve is a relatively inexpensive fix compared to other engine issues. The part itself is low-cost, and labor is minimal since it s typically a quick bolt-on replacement.

3. **Easy Installation** Most modern BMWs (especially those with inline-6 engines like the N52, N54, N55, or N63) have accessible crank vent valves. Replacement usually requires removing a few bolts and connecting hoses, which can be done without advanced mechanical skills.

4. **Prevents Long-Term Damage** Ignoring a failing crank vent valve can lead to more serious problems, such as carbon buildup in the intake, reduced engine efficiency, or even catastrophic failure in severe cases. Replacing it early avoids these risks.

5. **OEM or High-Quality Aftermarket Options** BMW offers genuine replacement parts, and reputable aftermarket brands (like Bosch, Mann, or Denso) provide reliable alternatives that meet or exceed OEM standards.

6. **DIY-Friendly** If you have basic mechanical knowledge, you can replace the valve yourself, saving on labor costs. Many online guides and videos provide step-by-step instructions.

7. **Common Issue in BMWs** These valves fail relatively frequently in BMW engines, especially in older models or those with high mileage. Knowing this makes it easier to diagnose and address the problem promptly.

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### **Cons**

1. **Symptoms Can Be Subtle** Early signs of a failing crank vent valve (like a slight ticking noise, rough idle, or reduced power) can be mistaken for other issues (e.g., worn valve seals, fuel injectors, or ignition problems). This may lead to unnecessary diagnostics or repairs.

2. **Potential for Counterfeit Parts** If purchasing aftermarket parts, there s a risk of receiving low-quality or fake components. Always buy from trusted suppliers to avoid performance or reliability issues.

3. **Additional Diagnostics May Be Needed** If the valve is part of a larger issue (e.g., a clogged PCV hose, faulty crankcase breather, or internal engine wear), replacing just the valve may not fully resolve the problem. A thorough inspection is recommended.

4. **Labor Costs if Professional Help Is Required** While the part itself is cheap, if you lack mechanical experience, a mechanic may charge a modest labor fee (typically $50 $150 depending on the shop). However, this is still far cheaper than major engine repairs.

5. **Potential for Recurrence** In some cases, the underlying cause (e.g., carbon buildup, oil sludge, or a failing crankshaft seal) may persist, leading to the valve failing again sooner than expected. Addressing the root cause (e.g., through a valve cleaning or oil system flush) can help prevent recurrence.

6. **Compatibility Issues with Modified Engines** If the engine has been heavily modified (e.g., forced induction, custom tuning), the stock crank vent valve may not perform optimally. In such cases, an upgraded or performance-tuned valve may be necessary.

7. **Time-Consuming for Inexperienced DIYers** While the job is simple, removing and reinstalling hoses and ensuring proper sealing can be tricky for those without prior experience. Mistakes could lead to leaks or improper function.

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### **Conclusion**

Replacing a faulty crank vent valve (part numbers 11 15 8 661, 11 15 8 697, etc.) in a BMW is a **highly recommended and cost-effective solution** to prevent oil contamination and engine damage. The benefits far outweigh the risks, especially when compared to the potential consequences of ignoring the issue. The process is straightforward, and the part is inexpensive, making it an ideal DIY project for most owners.

However, **proper diagnosis is key** ensure the valve is indeed the culprit before replacement. If symptoms persist after replacing the valve, further investigation (e.g., checking for carbon buildup, inspecting the PCV system, or testing for internal engine wear) may be necessary. Always source parts from reputable suppliers to avoid quality issues.

### **Recommendation**

- **If you suspect a failing crank vent valve**, purchase a genuine BMW or high-quality aftermarket replacement (e.g., Bosch 1 987 988 018 or Mann 730 12 as alternatives).

- **Follow a trusted step-by-step guide** (e.g., from BMW-specific forums like *BMW Club of America* or *BimmerWorld*) to ensure proper installation.

- **Consider professional help** if you re unsure about the diagnosis or installation process, though the labor cost is minimal.

- **Address any underlying issues** (e.g., oil sludge, carbon buildup) to prevent future valve failures.

- **Monitor the engine s performance** after replacement to confirm the issue is resolved.

**Final Verdict:** Replace the crank vent valve promptly if symptoms are present it s a small fix with significant long-term benefits for your BMW s health.

Details:

Parts must be resalable and in the original packaging. Accurate fitment for all BMW model's. We proudly support BMW drivers, independent repair facilities, and DIY enthusiasts throughout the Chicago land area across country. Electrical parts are not returnable.

Shipping Carrier substitutions may be made at our determination in an attempt to reduce shipping cost the customer.

part #: 11158661697 prices

  • $221.00-$491.88

specifications emissyste:

  • for makes: Bmw
  • mpn: 11-15-8-661-697
  • part type: Valve Crank Vent Case
  • manufacturer warranty: 1 Year
  • genuine oem: Yes
  • universal fitment: Direct Replacement

seller emissyste:

  • city: Elmhurst, Illinois
  • # reviews: 614
  • rating: 99.2%

returns emissyste:

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

general emissyste:

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

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offer emissyste:

  • sold: 0
  • availability: In Stock
  • started: May 30, 2026
  • options: Ship-to-home
  • quantity: 4

shipping emissyste:

  • service: Standard
  • class: Standard
  • transit: 4-7 Days
  • cost: $9.99
  • type: Fixed
for makes: bmw, part type: valve crank vent case, manufacturer warranty: 1 year, genuine oem: yes, universal fitment: direct replacement,
category: auto parts > car truck parts accessories > exhaust emission systems > exhaust emission parts, sku: 22340527152783813,
Bmw 11-15-8-661-697 Is Similar To:
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2 offers $221.00–$491.88 USD
  • New. Offer #1 priced at $491.88 + $20.00 shipping estimate = $511.88* total. +$20.00 shipping
  • Used. Offer #2 priced at $221.00 + $10.00 shipping estimate = $231.00* total. Programming may be necessary 4.4L turbo, 2010-12.+$10.00 shipping

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