WF328893 - Donaldson FAA-PMA Hi-Pressure Fuel Filter Element

WF328893 – Donaldson FAA-PMA Hi-Pressure Fuel Filter Element

Available now on the Airparts.aero Marketplace.

Overview

The Donaldson WF328893 is a genuine FAA-PMA approved, high-pressure fuel filter element, an essential component for protecting the sophisticated fuel systems of a wide range of business and regional jet aircraft. This is not a standard filter; it is a high-performance, micronic filter element engineered to provide the ultimate "last-chance" protection for the engine's Fuel Control Unit (FCU), fuel nozzles, and other precision-tolerance components. Manufactured by Donaldson, a global leader in advanced filtration, the WF328893 is designed to capture and retain microscopic contaminants from the fuel stream, ensuring the reliability and safety of the turbine engine.

Key Features

• Advanced Synthetic Filter Media: Utilizes Donaldson's advanced synthetic or micro-glass filter media, engineered to provide a very high particle capture efficiency at a specific micron rating. This ensures that even the smallest, most damaging hard particles are removed from the fuel.
• High-Pressure, High-Flow Design: The filter element is supported by a robust internal structure, allowing it to withstand the full pressure of the engine's high-pressure fuel system (often exceeding 500 PSI) and high fuel flow rates without collapsing or bypassing.
• Superior Dirt-Holding Capacity: The full-pleat, depth-loading media design provides a massive surface area, allowing it to hold a large volume of contaminants before reaching its bypass pressure, ensuring effective filtration throughout its designated service interval.
• Protection Against Water: The synthetic media is often hydrophobic, helping to coalesce and repel free water in the fuel, protecting the fuel system from corrosion and the engine from flameouts caused by water ingestion.
• FAA-PMA Certified: As a certified FAA-PMA part, it has been rigorously tested to meet or exceed the performance, safety, and quality standards of the original equipment manufacturer's filter, making it a fully airworthy and cost-effective solution.

Technical Specifications

• Part Number: WF328893
• Component Type: High-Pressure Fuel Filter Element (Cartridge)
• Filter Media: Advanced Synthetic / Micro-glass Media
• Filtration Rating: Micronic (exact rating is proprietary to the CMM)
• Primary Function: Last-chance filtration for turbine engine fuel control systems.
• Certification: FAA-PMA
• Replaces OEM: 49131-2

Aircraft Compatibility

The Donaldson WF328893 is a critical component for the fuel systems of some of the most common business and regional jets.

• Common Aircraft Platforms:
  • Textron Aviation: Cessna Citation series
  • Bombardier: Learjet, Challenger series
  • Dassault Falcon
  • And other business jets utilizing compatible engine and fuel system architectures.

Applications

The WF328893 is a key element for ensuring turbine engine reliability and performance:

• Fuel System Integrity: Its sole purpose is to ensure that the fuel reaching the Fuel Control Unit (FCU) and fuel nozzles is perfectly clean, preventing clogging of fine orifices and ensuring proper fuel atomization for efficient and stable combustion.
• Scheduled Maintenance: A mandatory replacement item at specified, calendar, or hourly engine service intervals as dictated by the aircraft's maintenance program.
• Troubleshooting Fuel System Issues: A primary component to inspect or replace when diagnosing issues of fuel contamination or fuel control system malfunctions.

Why Choose WF328893?

The Fuel Control Unit is the "brain" of the turbine engine, and its internal components, such as servo valves and metering orifices, have clearances measured in microns. A single particle of hard contamination can cause a valve to stick or an orifice to clog, leading to a hung start, an over-temperature event, or an in-flight engine shutdown. The Donaldson WF328893 is the small but essential component that prevents this. Using a high-quality, FAA-PMA approved part from a filtration leader like Donaldson is a critical investment in the safety and reliability of your high-value turbine engine.

Order Your Donaldson WF328893 Fuel Filter Elements Now

Protect your turbine engine's critical fuel system components with a certified, high-performance filter element. Visit Airparts.aero to inquire about Donaldson WF328893 fuel filters today.

The Donaldson WF328893 is a "last-chance" filter, a concept central to aerospace fluid system design. While the aircraft has main airframe fuel filters, there is always a possibility of contamination being generated downstream (e.g., from a failing pump or deteriorating hoses). The last-chance filter is a fine-micron, often non-bypassing, filter placed immediately before a critical component like the FCU. Its job is to catch any such internally generated debris. The synthetic/micro-glass media is essential; it provides a consistent and known filtration efficiency and is impervious to the high-velocity fuel flow and pressure pulses that could cause a lesser paper or fiber media to break down and shed its own material, which would be catastrophic for the fuel system.

Note: This is a flight-critical engine component. It is a life-limited item that must be replaced in accordance with the aircraft's approved maintenance program. Installation must be performed by a certified A&P or AME mechanic. Always use new O-rings or packings on the filter housing upon reassembly.