1. Engine Crankshafts Products
  2. sku: 19839696066088603
  3. APA URO 53186QYNS

APA/URO PARTS 53186QYNS Crankcase Vent Valve

fits make: Mercedes. year: 2007–2009.

53186qyns Apa/uro Parts For 2007-2009 Mercedes E320 Crankcase Vent Valve 2008

( Brand: Apa/uro Parts ), ( Manufacturer Part Number: 53186QYNS ), ( Part Type: Valve Vent ), ( Manufacturer Warranty: 12 Month Warranty ), ( Notes: Engine Crankcase Vent Valve Includes Hose ), ( Years: 2007 2008 2009 ), ( Application: Mercedes E320 Crankcase Vent Valve ), ( Product Name 2: Engine Crankcase Vent Valve ), ( Cs-sku: 400 )

Review APA/URO PARTS Mercedes Crankcase Vent Valve fits E320 2007–2009

The **APA/URO 53186QYNS** is a high-performance, precision-engineered crankcase ventilation valve specifically designed for the **2007 2009 Mercedes-Benz E320 (W211)** models, ensuring optimal engine breathing and emissions compliance while maintaining peak efficiency. This valve plays a critical role in the engine s **positive crankcase ventilation (PCV) system**, regulating the flow of blow-by gases exhaust gases that escape past the piston rings back into the intake manifold, preventing pressure buildup in the crankcase and reducing oil contamination. Crafted from durable **high-grade plastic and reinforced elastomeric materials**, the **53186QYNS** is engineered to withstand the demanding conditions of a high-performance or daily-driven E320, offering a tight seal and reliable operation under varying engine loads, temperatures, and altitudes.

What sets this valve apart is its **OEM-level precision and compatibility**, ensuring an exact fit with the **M272 V6 engine** found in these models, including both **naturally aspirated and turbocharged (E320 CDI)** variants. The valve features a **smooth, calibrated orifice** that precisely meters airflow, preventing excessive pressure fluctuations that could lead to oil leaks, valve cover gasket failure, or reduced engine performance. Its **threaded mounting design** guarantees a secure and leak-proof installation, eliminating the risk of vacuum loss or improper sealing that can occur with aftermarket alternatives of inferior quality. Additionally, the **53186QYNS** adheres to **EU emissions standards**, making it an ideal replacement for the factory unit, which may degrade over time due to heat, oil residue, or mechanical stress.

For enthusiasts and mechanics alike, this valve is a **must-have upgrade** to restore factory performance, improve engine efficiency, and extend the lifespan of critical components like the **valve cover gasket and oil control rings**. Its **universal applicability** to the **2008 model year** (and surrounding years) ensures compatibility without modification, while its **durable construction** promises long-term reliability, even under aggressive driving conditions. Whether used in a **restoration project, routine maintenance, or as a preventative measure**, the **APA/URO 53186QYNS** delivers the perfect balance of **performance, durability, and emissions compliance**, making it the superior choice over generic or low-quality replacements.

### Pros and Cons of buying a APA/URO 53186QYNS Crankcase Vent Valve for a 2007 2009 Mercedes-Benz E320 (2008 Model)

#### **Pros:**

1. **OEM Compatibility** The part number (53186QYNS) is an original equipment (OEM) or direct replacement part, meaning it is designed to fit your specific Mercedes-Benz model without modifications. This ensures proper function and compatibility with the engine s crankcase ventilation system.

2. **Reliability** Mercedes-Benz parts, even aftermarket OEM-equivalent replacements, are generally built to high standards. A properly functioning crankcase vent valve prevents oil leaks, reduces blow-by, and maintains proper engine pressure, which can extend engine life.

3. **Prevents Oil Leaks and Contamination** A faulty crankcase vent valve can allow oil vapors to escape into the intake system, leading to oil dilution in the fuel or carbon buildup. A new valve ensures these vapors are properly routed to the PCV (Positive Crankcase Ventilation) system, reducing engine wear and emissions issues.

4. **Easy Installation** The valve is typically a straightforward replacement, requiring only basic tools. It is usually located near the valve cover or intake manifold, and many mechanics or DIYers can install it in under an hour.

5. **Cost-Effective Long-Term Solution** While the upfront cost may seem high, replacing a failing valve prevents more expensive damage (e.g., oil leaks, intake system contamination, or engine performance issues) down the line.

6. **Warranty Coverage (If Purchased from Authorized Sellers)** Some reputable sellers offer warranties on OEM or aftermarket parts, providing peace of mind in case of premature failure.

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#### **Cons:**

1. **Higher Upfront Cost** Compared to generic or non-OEM alternatives, the APA/URO 53186QYNS part may be more expensive. However, this is offset by its reliability and compatibility.

2. **Potential Counterfeit Risks** If purchasing from untrusted sellers (e.g., unverified online marketplaces or gray-market suppliers), there is a risk of receiving a counterfeit or low-quality part. Always buy from reputable sources like official Mercedes-Benz dealers, authorized distributors, or well-reviewed aftermarket suppliers.

3. **Mixed Quality in Aftermarket OEM Parts** While some aftermarket OEM-equivalent parts are high-quality, others may not meet the same durability standards as genuine Mercedes parts. Research the brand s reputation before purchasing.

4. **Installation Challenges (If DIY)** If the valve is corroded or the surrounding area is dirty, installation may require extra effort. Improper installation (e.g., overtightening or incorrect routing of hoses) could lead to leaks or performance issues.

5. **Limited Longevity in Harsh Conditions** Like all mechanical parts, the valve s lifespan can be shortened by extreme driving conditions (e.g., frequent short trips, heavy loads, or high temperatures), though this is more of a general engine maintenance concern than a flaw of the part itself.

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### **Conclusion:**

The **APA/URO 53186QYNS crankcase vent valve** is a strong choice for your 2007 2009 Mercedes-Benz E320 (2008) due to its OEM compatibility, reliability, and role in preventing costly engine issues. The pros significantly outweigh the cons, especially if you prioritize long-term engine health and avoid counterfeit parts.

**Recommendation:**

- **Buy from a trusted source**, such as an authorized Mercedes-Benz parts dealer, a reputable aftermarket supplier (e.g., RockAuto, Amazon with verified sellers, or local Mercedes specialists), or a mechanic you trust.

- **Verify the part number** before purchase to ensure it matches your vehicle s specifications (some years/models may have slight variations).

- **Consider installation** If you re not comfortable with engine work, have a mechanic install it to avoid mistakes.

- **Pair with other maintenance** While replacing the valve, inspect the PCV system, hoses, and valve cover gasket for leaks or wear.

This part is a **worthwhile investment** for maintaining your E320 s performance and preventing future issues.

Details:

Replaces old plugged or sticking crankcase vent valves. Manufactured to OE dimensions for easy installation and original appearance. Reduces rate of oil buildup in intake. Restores proper air/fuel ratio and engine performance by evacuating sunburned gasoline vapors from the crankcase into intake.

Parts Geek - For 2007 - 2009 Mercedes E320 Crankcase Vent Valve 53186QYNS 2008: Review Fitment Notes to Ensure Proper Fit condition: New Brand: APA/URO Notes: Engine Includes Hose Features: Guaranteed fitment. Quality valve materials resist intense engine heat and vaporized oil. 12 Month Warranty Fitment Notes: Vehicle: 2007 - 2009 Mercedes E320.

part #: 53186qyns price

  • $79.08

specifications cranshafengin:

  • for makes: Mercedes
  • for years: 2007-2009
  • brand: Apa/uro Parts
  • mpn: 53186qyns
  • part type: Valve Vent
  • manufacturer warranty: 12 Month Warranty
  • notes: Engine Crankcase Vent Valve Includes Hose
  • years: 2007 2008 2009
  • application: Mercedes E320 Crankcase Vent Valve
  • product name 2: Engine Crankcase Vent Valve
  • cs-sku: 400

shipping cranshafengin:

  • cost: $0.00
  • type: Fixed
  • transit: 3-7 Days
  • service: FedEx Ground / FedEx Home Delivery
  • class: Standard
  • carrier: FedEx

general cranshafengin:

  • Car Truck Parts Accessories > Engines Engine Parts > Crankshafts
  • condition: New

returns cranshafengin:

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

offer cranshafengin:

  • availability: In Stock
  • options: Ship-to-home
  • quantity: 1
  • sold: 0
  • started: April 14, 2026

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seller cranshafengin:

  • rating: 98.8%
  • city: Rockville Centre, New York
  • # reviews: 328222
for makes: mercedes, for years: 2007-2009, part type: valve vent, manufacturer warranty: 12 month warranty, notes: engine crankcase vent valve includes hose, years: 2007 2008 2009, application: mercedes e320 crankcase vent valve, product name 2: engine crankcase vent valve, cs-sku: 400,
category: auto parts > car truck parts accessories > engines engine parts > crankshafts, sku: 19839696066088603,
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  • New. Offer #1 priced at $79.08 + $0.00 shipping estimate = $79.08* total. Quality valve materials resist intense engine heat and vaporized oil Notes: Engine Crankcase Vent Valve -- Includes Hose.FREE SHIPPING

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