179411 - Pratt and Whitney Fluid Filter Element

179411 – Pratt & Whitney Fluid Filter Element

Available now on the Airparts.aero Marketplace.

Overview

The Pratt & Whitney 179411 is a genuine OEM, flight-critical main oil filter element, engineered specifically for the legendary PT6A family of turboprop engines. This is not a generic filter; it is a high-performance, depth-media cartridge designed to provide the ultimate protection for the engine's lubrication system. Its primary function is to trap and remove microscopic contaminants from the circulating engine oil, thereby protecting the engine's high-speed bearings, gears, and other precision-tolerance components from abrasive wear. As a genuine Pratt & Whitney Canada (P&WC) part, it guarantees the correct filtration efficiency, flow rate, and collapse pressure required for this demanding application.

Key Features

• High-Efficiency Filtration Media: Utilizes a proprietary, high-capacity filter media engineered to capture microscopic contaminants (metal particles from wear, carbon deposits, etc.) down to a very fine micron level, ensuring the highest degree of oil cleanliness.
• 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 service interval.
• Robust Construction: Features a strong, perforated steel center core that prevents the media from collapsing under the high pressure differentials experienced during a cold start. The media is bonded to heavy-duty metal end caps to ensure a positive seal within the filter housing.
• Integrated Bypass Indication: Designed to work with the engine's impending bypass ("red button") indicator. A clogged filter will cause a pressure differential that alerts the pilot or mechanic to a problem before the filter goes into full bypass.
• Genuine P&WC OEM Part: As a genuine factory component, it guarantees conformance to the stringent material, manufacturing, and performance standards required by the engine's original Type Certificate. This is the only way to ensure the safety and reliability of your engine's lubrication system.

Technical Specifications

• Part Number: 179411
• Component Type: Main Oil Filter Element (Cartridge)
• Manufacturer: Pratt & Whitney Canada (P&WC)
• Primary Function: Filters the main engine oil supply.
• Filter Media: High-Efficiency Pleated Media
• Construction: Steel Core, Metal End Caps
• Certification: FAA / TCCA Production Approval

Aircraft Compatibility

The 179411 is the standard main oil filter element for an extremely wide range of aircraft powered by the ubiquitous Pratt & Whitney Canada PT6A engine. It is essential to consult the specific engine's Illustrated Parts Catalog (IPC) for final verification.

• Primary Engine Models:
  • Pratt & Whitney Canada PT6A Series (numerous variants)
• Common Aircraft Platforms:
  • Beechcraft: King Air 90, 100, 200 Series
  • Cessna: 208 Caravan
  • Pilatus: PC-12
  • Daher (Socata): TBM Series
  • De Havilland Canada: DHC-6 Twin Otter

Applications

The 179411 is a critical component for engine health and preventative maintenance:

• Engine Lubrication System: The primary defense against circulating contaminants that cause wear on bearings, gears, and oil-wetted components.
• Scheduled Maintenance: A mandatory replacement item at every scheduled oil change or engine inspection interval.
• Engine Health Monitoring: After removal, the filter is cut open and the media is inspected for metal particles. This "chip check" is one of the most important diagnostic tools for detecting abnormal internal engine wear long before a major failure occurs.

Why Choose 179411?

The lubrication system is the lifeblood of a turbine engine. The failure of this system due to contamination can lead to an in-flight shutdown. The Pratt & Whitney 179411 is the OEM-certified component designed and tested by the engine manufacturer to provide the exact level of filtration and flow required by the PT6A engine. Using non-certified, aftermarket filters can introduce risks of improper filtration, media collapse, or premature bypass, all of which can have catastrophic consequences. For the health and safety of your engine, there is no substitute for a genuine P&WC part.

Order Your 179411 Oil Filter Elements Now

Protect your high-value turbine engine with the certified quality and performance of a genuine Pratt & Whitney oil filter. Visit Airparts.aero to order your 179411 filter elements today.

The 179411 oil filter element is a key part of the PT6A's dry-sump lubrication system. Pressurized oil from the main oil pump is directed through the filter before being routed to the engine's main bearings and gearboxes. The filter is designed to have a high flow rate with a minimal pressure drop when clean. As the filter media traps contaminants, the pressure drop across the element slowly increases. The engine's filter housing contains a bypass valve that is spring-loaded to open at a specific pressure differential (e.g., 50 PSID). Before this happens, a separate, more sensitive impending bypass indicator is activated to provide an advance warning of a clogged filter. The robust construction of the 179411 element is designed to withstand this full bypass pressure differential without collapsing, ensuring that the engine never starves for oil, even if the filter is completely blocked.

Note: This is a flight-critical engine component. Installation must be performed by a certified A&P or AME mechanic in strict accordance with the current Pratt & Whitney Canada maintenance manual. The old filter must be properly cut and inspected as part of any maintenance procedure. Always use a new preformed packing on the filter housing upon reassembly.

• • Western Filter Corporation P/N - WF326058 [Click Here]
  
• • PTI Technologies Inc P/N - 7509213 [Click Here]

Product Overview

A replaceable device designed to remove solid particles from fluids ranging in density from heavy liquids to gases. The removal of particles is accomplished by porous material (metallic or non-metallic), stacked disks, wound wire, or the like, constructed so the fluid can flow through the device while the solid particles are retained. It may be designed to fit into a FILTER, FLUID (or similar cavity), or it may have an integral outer casing and mounting facilities and be designed to connect directly to an engine, compressor, or the like. The degree of removal of particles must be nominally rated at less than 50 microns or absolutely rated at less than 75 microns.

Used in Textron Aviation Hawker 800XP-850XP