FEXON KZ-OS-0059 Air Oil Separator Ford Powerstroke 6.7L FC3Z-6A785-F

( Brand: Fexon ), ( Manufacturer Part Number: KZ-OS-0059 ), ( Part Type: Air Oil Separator ), ( Country Of Origin: China )

Review FEXON Air Oil Separator Assembly Ford Super Duty 6.7l Powerstroke

The **Fexon KZ-OS-0059 Air-Oil Separator** is a meticulously engineered aftermarket component designed specifically for Ford s legendary **6.7L Powerstroke (7.3L displacement)** diesel engines, featuring the **FC3Z-6A785-F** designation. This high-performance air-oil separator is a critical upgrade for turbocharged diesel applications, ensuring optimal engine protection by effectively filtering and separating oil vapors from the turbocharger s exhaust gases before they re-enter the intake system. Crafted from durable **high-grade aluminum** with precision-machined internal passages, the separator boasts a robust yet lightweight construction that enhances reliability while minimizing weight in the engine bay. Its **threaded mounting design** allows for seamless installation, replacing the stock separator with minimal modifications, and is compatible with the **Eaton MV618 turbocharger** and related turbocharger systems found in the 6.7L Powerstroke. The separator s **patented internal baffling system** creates a labyrinthine flow path that maximizes oil droplet separation efficiency, reducing oil carryover into the intake manifold and preventing premature turbocharger wear, carbon buildup, and intake system contamination. This component is particularly beneficial for high-mileage engines, turbocharged applications, or those operating under heavy loads, as it helps maintain cleaner oil flow, improves turbocharger longevity, and supports overall engine efficiency. Built to withstand the demanding conditions of diesel power, the Fexon KZ-OS-0059 is backed by rigorous quality control standards, ensuring a tight seal and consistent performance. Whether used in daily driving, towing, or performance applications, this air-oil separator is an essential upgrade for maintaining the health of your Ford 6.7L Powerstroke s turbocharged system.

**Pros and Cons of buying a Fexon KZ-OS-0059 Air-Oil Separator for the Ford 6.7L Powerstroke (FC3Z-6A785-F)**

### **Pros**

1. **Improved Engine Protection** The air-oil separator helps reduce oil contamination in the intake system by filtering out oil mist and particles. This can extend the life of turbochargers, intercoolers, and intake components, which are common failure points in turbocharged diesel engines like the 6.7L Powerstroke.

2. **Enhanced Turbocharger Longevity** Oil mist buildup in the turbocharger housing can lead to premature wear or failure. The Fexon separator reduces this risk by capturing oil particles before they enter the turbo.

3. **Better Fuel Efficiency** By minimizing oil carryover into the combustion chamber, the separator can help maintain optimal air-fuel ratios, potentially improving fuel economy over time.

4. **Easier Installation** The Fexon KZ-OS-0059 is designed as a direct replacement for the stock separator on the 6.7L Powerstroke, meaning it should fit without major modifications. It includes all necessary gaskets and mounting hardware.

5. **Cost-Effective Upgrade** Compared to the potential cost of replacing a damaged turbocharger or intercooler, the Fexon separator is a relatively inexpensive preventive measure.

6. **Compatibility with Aftermarket Parts** Since it s a direct-fit solution, it works well with stock and aftermarket turbo setups, including common upgrades like larger turbos or custom intercoolers.

7. **Reduced Carbon Buildup** Less oil entering the intake system can help reduce carbon deposits on intake valves and pistons, which can improve engine performance and reduce maintenance needs.

8. **Warranty Coverage** Fexon products often come with a warranty, providing some peace of mind against manufacturing defects.

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### **Cons**

1. **Limited Effectiveness on Severe Oil Leaks** If the engine has a significant oil leak (e.g., from a failing valve cover gasket or oil pan gasket), the separator alone may not fully resolve the issue. Additional repairs may still be necessary.

2. **Installation Requires Care** While the Fexon separator is designed for easy installation, improper sealing or torqueing of bolts can lead to leaks. Ensuring proper gasket placement and tightening is crucial.

3. **Not a Cure for Underlying Issues** The separator addresses oil mist but does not fix problems like worn piston rings, turbo seals, or failing injectors. It s a symptom treatment, not a root cause solution.

4. **Potential for Clogging** Over time, the separator s filters may accumulate debris, which could restrict airflow if not cleaned or replaced as recommended. Regular maintenance is required.

5. **Mixed Reviews on Durability** Some users report that aftermarket separators, including Fexon s, may not last as long as OEM parts. Quality can vary, so sourcing from reputable sellers is important.

6. **May Not Be Necessary for Low-Mileage Engines** If the engine is well-maintained and has low mileage with no history of oil leaks, the benefits of the separator may be minimal compared to the cost.

7. **Installation Time and Labor** Even though it s a direct-fit part, removing the old separator and installing the new one requires disassembling parts of the intake system, which may take time for DIYers.

8. **Compatibility with Some Mods** In rare cases, aggressive aftermarket modifications (e.g., extreme turbo upgrades or custom intake manifolds) might require additional adjustments to ensure the separator functions correctly.

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### **Conclusion**

The **Fexon KZ-OS-0059 air-oil separator** is a practical and relatively low-cost upgrade for the **Ford 6.7L Powerstroke**, particularly for engines with noticeable oil mist issues, high mileage, or a history of turbo or intake component failures. It offers tangible benefits in terms of **engine protection, turbo longevity, and potential fuel efficiency improvements**, making it a worthwhile consideration for most owners who prioritize long-term reliability.

However, it is **not a standalone fix** for severe oil leaks or underlying engine problems. It should be part of a broader maintenance strategy that includes regular oil changes, gasket inspections, and addressing any leaks promptly. For engines in excellent condition with no history of oil-related issues, the separator may offer diminishing returns compared to its cost.

If you re experiencing **excessive oil buildup in the intake, turbocharger fouling, or reduced performance**, the Fexon separator is a **strongly recommended upgrade**. For engines with no visible symptoms, it remains a **preventative measure worth considering**, especially if you plan to keep the vehicle long-term.

Purchase the **Fexon KZ-OS-0059** if you notice oil mist in the intake, have high mileage, or want to proactively protect your turbocharger and intake system. Install it as part of a **routine maintenance routine**, and pair it with regular inspections of oil seals, gaskets, and turbo components. For best results, source it from a trusted seller (e.g., Summit Racing, RockAuto, or a reputable diesel specialist) to ensure quality and compatibility. If your engine is already in pristine condition, weigh the cost against potential benefits, but the separator is generally a **safe and beneficial upgrade** for the 6.7L Powerstroke.

Details:

Engine Air Oil Separator Assembly 2017 2018 2019 For Ford F-250 F-350 F-450 F-550 Super Duty 6.7L Powerstroke Diesel PCV CCV Vent Valve without Sensor Replaces FC3Z-6A785-F FC3Z-6A785-D FC3Z-6A785-E: Strict Quality Control: All FEXON products undergo strict quality control. OEM Design Direct Fit replacement, exactly match the original one, quality meet oem standards, product have already check before packing. Compatible With This Oil Separator Ford: For F-250 Super Duty 2 2017, 2018, 2019 ; F-350 F-450 F-550 2019.: Manufacturer: KINGZAUTO.

If this is your first time performing replacement, it highly recommended to review available video tutorials for visual guidance before beginning. Every product is tested quality before packing. Features: Package Include1 PCs Engine Air Oil Separator Assembly, Compatible with Select Ford model's. Replace Part Number This Air Oil Separator replace part number of FC3Z-6A785-F FC3Z-6A785-D FC3Z-6A785-E FC3Z6A785F FC3Z6A785D FC3Z6A785E.

Fine Workmanship And Long Life: Meet or Exceed OEM Quality Standards. Use high quality materials to ensure long service life.

part #: kzos0059 price

• $69.99

specifications kitchenstororg:

• brand: Fexon
• mpn: Kz-os-0059
• part type: Air Oil Separator
• country of origin: China

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• Kitchen, Dining Bar > Kitchen storage Organization > Other Kitchen storage
• condition: New

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