K&N Universal Air Filter 4in Flange / 5-3/8 in Base / 4-1/2in Top / 5in Height - K&N Engineering KNNRU-3600
K&N Universal Air Filter 4in Flange / 5-3/8 in Base / 4-1/2in Top / 5in Height - K&N Engineering KNNRU-3600
K&N Universal Air Filter 4in Flange / 5-3/8 in Base / 4-1/2in Top / 5in Height - K&N Engineering KNNRU-3600
K&N Universal Air Filter 4in Flange / 5-3/8 in Base / 4-1/2in Top / 5in Height - K&N Engineering KNNRU-3600
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K&N Universal Air Filter 4in Flange / 5-3/8 in Base / 4-1/2in Top / 5in Height

$ 62.99
$ 62.99

The K&N RU-3600 is a clamp-on universal air filter engineered for racing vehicles generators snowmobiles tractors and select cars including 2006-2008 Audi A3 2008 Audi TT 1998 BMW 318i 1997-1998 Mercedes-Benz C230 and 2001-2002 Saab 9-3 models. Its high-flow media increases horsepower and acceleration while trapping contaminants with four layers of premium cotton gauze. Pre-oiled and washable this filter installs easily for lasting engine performance gains.

Key Features

  • Easy Installation: Pre-oiled and ready to use with molded rubber flanges that stretch up to 116 inch for secure clamp-on fit.
  • Weight: 1.3 lb (0.6 kg).
  • Clamp-on design fits 4in flange centered with 1.063in flange length.
  • Engineered Power: State-of-the-art media boosts horsepower acceleration and overall engine response in diverse applications.
  • Flanges absorb vibration and provide secure attachment to 4in intake diameters.
  • Stretches up to 116in to match in-between intake sizes no special tools needed.

Fitment

Years Make Model Application
2006-2008 Audi A3 Verify engine and application notes
2008 Audi TT Verify engine and application notes
1998 BMW 318i Verify engine and application notes
1997-1998 Mercedes-Benz C230 Verify engine and application notes
2001-2002 Saab 9-3 SE

Specifications

Brand K&N Engineering
Manufacturer Part Number RU-3600
Product Type Air Filters - Universal Fit
Fitment Type Vehicle Specific
Condition New

What's Included

One new K&N air filters - universal fit identified by manufacturer part number RU-3600. Hardware, adapters, clamps, hoses, filters, and service supplies are included only when stated for this exact product.

About K&N Engineering

K&N develops reusable air filtration, intake, oil filtration, fuel filtration, and related performance products for vehicle-specific and dimensional applications.

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Frequently Asked Questions

How do I confirm K&N RU-3600 fits my vehicle?
Match the year, make, and model in the fitment table, then confirm the engine, factory housing, sensor layout, emissions notes, and any application restrictions stated for this exact part.

Is K&N RU-3600 washable and reusable?
Serviceability depends on the exact media used for this part number. Follow the K&N cleaning and oiling directions for this filter and never apply oil to media specified as dry.

What should be checked after installing K&N RU-3600?
Verify seals, clamps, fasteners, hoses, sensors, wiring, and surrounding clearance as applicable. Check for leaks or contact, then follow the manufacturer service and reinspection schedule.

Installation Instructions

  • Clamp-on design fits 4in flange centered with 1.063in flange length.
  • Stretches up to 116in to match in-between intake sizes no special tools needed.
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