Universal Air Filter - 3 Inch Flange

SKU: PWKNF01

$95.00 AUD

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Designed for maximum airflow and long-term protection, this K&N high-flow air filter outperforms factory paper filters. Made with washable cotton media, it delivers superior engine filtration and is the exact filter featured in many Process West Cold Air Intakes and Air Boxes.

Approximate sizing:

  • 3 inch flange (76mm)
  • 7.75 inch total height (197mm)
  • 6 inch total filter height (152mm)
  • 6 inch total width at base (152mm)

Details:

  • Flange: Flexible Polyurethane
  • Media: 4-ply cotton
  • Re-oiling Volume: 1.27 oz (38ml)

This Air Filter is a universal fitment, used with many of our cold air intakes and air boxes, including (but not limited to):

Cold Air Intake w/ K&N Filter - Subaru 97-98 WRX/STI
Cold Air Intake w/ K&N Filter - Subaru 99-00 WRX/STI
Cold Air Intake w/ K&N Filter - Subaru 01-07 WRX/STI
Cold Air Intake 72mm w/ K&N Filter - Subaru 01-07 WRX/STI
Cold Air Intake 72mm w/ K&N Filter - Subaru 08-14 WRX/STI
Cold Air Intake 76mm w/ K&N Filter - Subaru 08-14 WRX/STI
Cold Air Intake 72mm w/ K&N Filter - Subaru 15-21 STI
Cold Air Intake 76mm w /K&N Filter - Subaru 15-21 STI
Cold Air Intake w/ K&N Filter - Subaru 15-21 WRX
Cold Air Intake w/ K&N Filter - Subaru 07-09 Liberty/Legacy GT
MY22 WRX CAI with K&N filter
Under Battery Cold Air Intake w/ K&N Air Filter - Ford Falcon BA/BF

In Pursuit of Something More. 

There's more power waiting under the hood, Process West will help you get it. 

Ground-Up Performance Engineering.

Our designs all follow a similar path. We remove the stock component and 3D scan the engine bay to determine the precise constraints of the available space. Once we know what we’re working with, we generate functional renders and finalise form, function, and fitment.

Following our digital models, we generate 3D printed prototypes for further, real-world confirmation of size, fitment, and installation ease. When our prototype is perfect, it's on to manufacturing.

Proudly Built Down Under.

All our products are built in-house at our Australian facility. From billet aluminium CNC machining, welding, powder coating and packaging. 

Preferred By Record Holders.

You’ll find Process West in some of the quickest and fastest builds in the world, driven by those who only care about one thing. Results.

Pioneers Since 2003.

Process West is built on continuous innovation. We’ve been working on performance dynamics for over 20 years. Every component we develop is designed to set new performance benchmarks.

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