1. Exhaust & Emission Parts To Buy
  2. sku: 21546208864328721
  3. REIN SX-DQT9

REIN SX-DQT9 Valve Cover Hose Crankcase Breather Qd 4.4L V8

fits model: 650i. make: Bmw. year: 2012.

Sx-dqt9 Rein Valve Cover To Hose Crankcase Breather For 2012 Bmw 650i 4.4l V8 Qd

( Brand: Rein ), ( Manufacturer Part Number: SX-DQT9 ), ( Ipn: C855 17-49 ), ( Placement On Vehicle: Emission Control Crankcase Ventilation System ), ( Core Charge: Free No Core Charge ), ( Position: Valve Cover To Hose ), ( Type: Engine Crankcase Breather Hose ), ( Universal Fitment: Direct Replacement ), ( Bundle Description: 1 Pc Genuine Rein Engine Crankcase Breather Hose )

Review REIN Valve Cover To Hose Crankcase Breather Bmw 4.4l V8 Qd fits 650I 2012

The **Rein SX-DQT9 Valve Cover Hose and Crankcase Breather Assembly** is a meticulously engineered, high-performance replacement part designed specifically for the **2012 BMW 6 Series 650i (N63) with the 4.4L Twin-Turbo V8 (QD) engine**. This premium component is crafted to restore factory precision while enhancing reliability, reducing emissions, and preventing oil contamination a critical concern in high-performance and turbocharged applications. The valve cover hose, constructed from **high-grade, heat-resistant rubber**, ensures durability under the demanding conditions of turbocharged engine operation, where extreme temperatures and pressure fluctuations are common. Its precise fitment eliminates leaks, maintaining optimal crankcase pressure and preventing oil from seeping into the intake system, which can foul spark plugs, clog the intake tract, or even damage the turbocharger over time. The integrated crankcase breather system further refines performance by efficiently filtering and routing blow-by gases away from sensitive engine components, reducing carbon buildup on intake valves and prolonging the life of the turbocharger and intercooler. Engineered to meet or exceed OEM specifications, this assembly features **laser-cut fittings and reinforced clamps** for a secure, vibration-free connection, ensuring long-term reliability even under aggressive driving conditions. Whether used in a daily driver or a high-performance modification, the Rein SX-DQT9 is an essential upgrade for maintaining engine health, optimizing airflow, and preserving the integrity of the turbocharged 4.4L V8 s critical components.

### **Pros and Cons of buying a Rein SX-DQT9 Valve Cover Hose/Crankcase Breather for a 2012 BMW 650i (4.4L V8 QD)**

#### **Pros:**

1. **Direct Fitment** The Rein SX-DQT9 is specifically designed for the 2012 BMW 650i with the 4.4L V8 QD engine, ensuring compatibility without modifications.

2. **High-Quality Materials** Rein is known for using durable materials, including reinforced rubber and corrosion-resistant components, which should last longer than OEM parts.

3. **Improved Functionality** The crankcase breather system helps reduce oil consumption, prevents moisture buildup, and maintains proper engine breathing, which can improve engine longevity.

4. **Easy Installation** The part is designed for straightforward replacement, requiring minimal tools and time (typically under an hour for a DIYer).

5. **Cost-Effective Alternative** While not the cheapest option, it is often more affordable than an OEM replacement, offering better value for performance and durability.

6. **Reduces Engine Contamination** A failing breather can allow moisture, debris, and oil vapors to enter the intake system, leading to carbon buildup and reduced performance. A proper replacement mitigates this risk.

7. **Prevents Oil Leaks** A well-sealed breather system helps maintain proper crankcase pressure, reducing the likelihood of oil leaks from gaskets and seals.

#### **Cons:**

1. **Potential Fitment Issues** While Rein parts are generally reliable, there is always a slight risk of minor fitment discrepancies, especially if the engine bay was previously modified or if there is significant wear on mounting points.

2. **Installation Complexity** If the vehicle has accumulated significant mileage, the surrounding components (such as the valve cover gasket or PCV system) may need inspection or replacement, adding to labor time.

3. **Limited Brand Recognition** While Rein is a reputable aftermarket brand, it is not an OEM supplier, which may concern some buyers who prefer factory parts for peace of mind.

4. **Price Point** The Rein SX-DQT9 is priced higher than some generic aftermarket alternatives, though it justifies the cost with better quality and longevity.

5. **Requires Proper Maintenance** Like any breather system, it must be inspected periodically for cracks, clogs, or leaks, especially in high-mileage or harsh driving conditions.

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### **Conclusion**

The **Rein SX-DQT9 Valve Cover Hose/Crankcase Breather** is a solid choice for the 2012 BMW 650i (4.4L V8 QD) due to its direct fitment, high-quality construction, and proven reliability. It addresses common issues related to oil consumption, moisture ingress, and engine contamination while being easier to install than an OEM replacement. However, buyers should ensure the surrounding components (such as the valve cover gasket and PCV system) are in good condition before installation to avoid secondary issues.

For most owners, the **benefits outweigh the drawbacks**, making this a recommended upgrade or replacement part. If budget is a concern, a thorough comparison with other high-quality aftermarket brands (such as ACDelco or Bosch) may be worthwhile, but Rein s reputation for durability and performance makes it a strong default choice.

**Final Recommendation:** **Purchase the Rein SX-DQT9** for your 2012 BMW 650i, as it provides a reliable, long-lasting solution that enhances engine protection and efficiency. Pair the replacement with a valve cover gasket inspection to ensure a complete and long-term fix.

Details:

Rein Valve Cover To Hose Crankcase Breather for 2012 BMW 650I 4.4L V8 qd: Status: In Stock.

part #: sxdqt9 prices

  • $60.53-$75.49

specifications emissyste:

  • for models: 650i
  • for makes: Bmw
  • for years: 2012
  • brand: Rein
  • mpn: Sx-dqt9
  • ipn: C855 17-49
  • placement on vehicle: Emission Control Crankcase Ventilation System
  • core charge: Free No Core Charge
  • position: Valve Cover To Hose
  • type: Engine Crankcase Breather Hose
  • universal fitment: Direct Replacement
  • bundle description: 1 Pc Genuine Rein Engine Crankcase Breather Hose

general emissyste:

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

payments emissyste:

  • credit card: Discover
  • other
  • wallet: Apple-pay

offer emissyste:

  • sold: 0
  • availability: In Stock
  • started: April 22, 2026
  • quantity: 2
  • options: Ship-to-home

shipping emissyste:

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

seller emissyste:

  • # reviews: 648058
  • rating: 99.6%
  • city: Indianapolis, Indiana

returns emissyste:

  • paid by: Seller
  • time: 30 Days
  • policy: Returns Accepted
for models: 650i, for makes: bmw, for years: 2012, placement on vehicle: emission control crankcase ventilation system, core charge: free no core charge, position: valve cover to hose, type: engine crankcase breather hose, universal fitment: direct replacement, bundle description: 1 pc genuine rein engine crankcase breather hose,
category: auto parts > car truck parts accessories > exhaust emission systems > exhaust emission parts, sku: 21546208864328721,
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