Genuine Ford GC4Z-6A777-B 6.7L Powerstroke Crankcase Ventilation (CCV) Filter / Oil Separator

Maintain peak performance and protect your 2017-2019 6.7L Powerstroke with the genuine Ford GC4Z-6A777-B Crankcase Ventilation Filter (also known as the CCV Oil Separator Filter or Motorcraft FL-2077).

This OEM filter is a key part of the closed crankcase ventilation system. It separates oil mist, sludge, and contaminants from blow-by gases before they can enter the intake system, turbocharger, and intercooler. By doing so, it helps prevent oil contamination, carbon buildup, and excess crankcase pressure while supporting cleaner engine operation and longer component life.

Key Benefits

• Genuine Ford / Motorcraft quality for exact fit and reliable performance
• Traps oil sludge and contaminants effectively
• Protects the turbo, intercooler, and intake from oil fouling
• Helps reduce the risk of increased oil consumption and related issues
• Direct replacement for GC4Z-6A777-A and FL-2070

Fitment

2017–2019 Ford F-250, F-350, F-450, and F-550 Super Duty with 6.7L Powerstroke diesel.

Note: Application can vary by single rear wheel (SRW) vs. dual rear wheel (DRW) configuration and chassis cab models (the serviceable filter element is primarily used with certain GC4Z-6A785-D style housings). We recommend verifying fitment with your VIN.

This is the factory-spec service filter designed to keep your Powerstroke running clean and protected.