1. Exhaust & Emission Parts To Buy
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  3. REIN 2016

REIN C784 Crankcase Breather Hose Engine Emission Ks 75-28 3.0L L6

fits model: Z4. make: Bmw. year: 2009–2016.

C784 Rein 75-28 Crankcase Breather Hose For 2009-2016 Bmw Z4 3.0l L6 Engine Emission Ks

( Brand: Rein ), ( Manufacturer Part Number: 2016 ), ( Ipn: C784 75-28 ), ( Placement On Vehicle: Emission Control Crankcase Ventilation System ), ( Compatible Year: 2016 2015 2014 2013 2012 2011 2010 2009 ), ( Core Charge: Free No Core Charge ), ( Type: Engine Crankcase Breather Hose ), ( Universal Fitment: Direct Replacement ), ( Bundle Description: 1 Pc Genuine Rein Engine Crankcase Breather Hose )

Review REIN 75-28 Crankcase Breather Hose Bmw 3.0l L6 Engine Emission Ks fits Z4 2009–2016

The **REIN C784 75-28 Crankcase Breather Hose** is a precision-engineered replacement part designed specifically for the **2009 2016 BMW Z4 with the 3.0L L6 (N52) inline-six engine**, ensuring optimal performance, emissions compliance, and long-term reliability. This high-quality breather hose is meticulously crafted to meet or exceed OEM specifications, utilizing durable materials that resist cracking, kinking, and environmental degradation, even under the demanding conditions of high-performance driving. The hose features a **reinforced construction** with a **flexible yet sturdy design**, allowing for smooth operation while maintaining a secure seal at critical connection points, including the **PCV (Positive Crankcase Ventilation) system and oil separator**. Engineered to comply with **Emission Control System (ECS) standards**, this breather hose helps prevent harmful crankcase gases from escaping into the atmosphere, reducing oil consumption and minimizing the risk of carbon buildup on intake valves a common issue in high-mileage or aggressive-driven BMWs. Its **universal compatibility** ensures a perfect fit for the **N52 engine bay**, where it plays a vital role in maintaining proper engine vacuum and pressure balance. Whether used for routine maintenance, emissions testing, or as a proactive upgrade to prevent future issues, the REIN C784 breather hose delivers **superior durability, leak resistance, and performance**, making it an essential component for preserving the health and efficiency of your BMW Z4 s engine.

**Pros and Cons of buying a Rein C784 75-28 Crankcase Breather Hose for a 2009 2016 BMW Z4 3.0L L6 Engine (Emission KS)**

### **Pros**

1. **OEM Fitment and Compatibility** The Rein C784 is designed as a direct replacement for the original BMW part, ensuring a proper fit with the 3.0L L6 engine s crankcase breather system. This minimizes the risk of leaks or improper installation, which can be a common issue with aftermarket hoses that don t match the exact dimensions or routing.

2. **High-Quality Materials** Rein parts are generally made from durable rubber compounds that resist cracking, kinking, or degradation over time, especially under the heat and vacuum conditions found in the crankcase breather system. This can extend the life of the component compared to cheaper alternatives.

3. **Emission Compliance** The "KS" designation in the product name suggests it is designed to meet emissions standards, which is critical for the 2009 2016 Z4 models that may require proper breather function to pass emissions tests or avoid check engine lights (e.g., P0171/P0174 for vacuum leaks or P0440 for EVAP system issues).

4. **Easy Installation** The hose is typically straightforward to install, requiring only basic tools. Since it s a direct replacement, there s no need for modifications to the engine bay or breather system, reducing labor time and complexity.

5. **Reliability for Long-Term Use** A well-made crankcase breather hose prevents oil leaks into the intake system, reduces carbon buildup on intake valves, and helps maintain proper engine vacuum. This can contribute to smoother engine operation and fewer long-term issues like oil dilution or carbon fouling.

6. **Support for Turbocharged Engines** The 3.0L L6 in the Z4 is turbocharged, and a failing breather hose can exacerbate turbo-related issues (e.g., oil in the turbo or intake system). A quality replacement helps mitigate these risks.

7. **Warranty and Customer Support** Rein offers warranties on their products, and their parts are often backed by customer service teams that can assist with installation questions or defects, which is more reliable than some generic aftermarket brands.

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### **Cons**

1. **Cost Compared to Generic Alternatives** Rein parts are typically more expensive than no-name or generic hoses from brands like ACDelco, Fram, or even some Amazon sellers. For budget-conscious buyers, this may be a drawback, though the trade-off is often better quality and longevity.

2. **Potential Overkill for Minor Issues** If the original hose failed due to a minor issue (e.g., a small crack or loose clamp), some owners might consider a cheaper replacement first. However, if the failure was due to age or material degradation, Rein s higher-quality hose is justified.

3. **Limited Availability in Some Regions** Depending on where you purchase, Rein parts may not be as widely stocked as more mainstream brands. This could require ordering online or from specialty auto parts suppliers, which may involve shipping delays.

4. **Installation Challenges for DIYers** While the hose itself is simple to replace, some owners may struggle with routing it correctly or ensuring a tight seal at the clamps. Improper installation can lead to leaks or reduced effectiveness, negating the benefits of the high-quality hose.

5. **Mixed Reviews on Longevity** While Rein is generally well-regarded, some users report that even their hoses may not last indefinitely, especially in high-mileage or aggressive driving conditions. This is less of a critique of the product and more of a reminder that no hose is immune to wear over time.

6. **Potential for Counterfeit Products** As with any aftermarket brand, there is a risk of purchasing counterfeit Rein parts, especially from third-party sellers. Buying directly from authorized dealers or reputable online retailers (e.g., RockAuto, BMW-specific suppliers) helps mitigate this risk.

---

### **Conclusion**

The Rein C784 75-28 crankcase breather hose is a strong choice for owners of the 2009 2016 BMW Z4 3.0L L6 engine, particularly if you prioritize reliability, emissions compliance, and long-term performance. Its OEM fitment, durable materials, and compatibility with turbocharged engines make it a practical investment to prevent oil leaks, carbon buildup, and potential turbo damage. However, the higher cost and potential overkill for minor issues may deter budget-conscious buyers or those who prefer to test cheaper alternatives first.

For most serious BMW enthusiasts or owners who want to avoid future problems, the Rein hose is a worthwhile upgrade. If you re on a tight budget or the original hose failed due to a specific issue (e.g., a clamp problem), a mid-range aftermarket hose (e.g., from Mann or Bosch) might suffice. But for peace of mind and long-term reliability, Rein is a solid recommendation.

**Final Recommendation:** Purchase the Rein C784 75-28 hose if:

- You want a direct OEM replacement with high durability.

- Your engine is high-mileage or turbocharged, where reliability is critical.

- You re willing to invest in a part that reduces the risk of future issues (e.g., oil leaks, carbon fouling).

Consider alternatives (e.g., Mann or Bosch) if:

- You re on a tight budget and the original hose failed due to a minor issue.

- You re comfortable with a slightly lower-cost option and can verify its compatibility with your specific model year.

Details:

Rein Crankcase Breather Hose for 2009 - 2016 BMW Z4 3.0L L6 Engine Emission ks: Status: In Stock.

specifications emissyste:

  • for models: Z4
  • for makes: Bmw
  • for years: 2009-2016
  • brand: Rein
  • mpn: 2016
  • ipn: C784 75-28
  • placement on vehicle: Emission Control Crankcase Ventilation System
  • compatible year: 2016 2015 2014 2013 2012 2011 2010 2009
  • core charge: Free No Core Charge
  • type: Engine Crankcase Breather Hose
  • universal fitment: Direct Replacement
  • bundle description: 1 Pc Genuine Rein Engine Crankcase Breather Hose

general emissyste:

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

returns emissyste:

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

shipping emissyste:

  • cost: $0.00
  • type: Fixed
  • service: Standard, Expedited
  • transit: 3-8 Days
  • class: Standard, Expedited

seller emissyste:

  • rating: 99.5%
  • city: Indianapolis, Indiana
  • # reviews: 620776

payments emissyste:

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

offer emissyste:

  • quantity: 3
  • availability: In Stock
  • started: February 9, 2026
  • options: Ship-to-home
  • sold: 0
for models: z4, for makes: bmw, for years: 2009-2016, placement on vehicle: emission control crankcase ventilation system, compatible year: 2016 2015 2014 2013 2012 2011 2010 2009, core charge: free no core charge, 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: 20032786223710892,
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