K&N Universal Clamp-On Air Filter — Oval 4 in Flange

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SKU: BBWQ_RC-5178
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Universal Performance Air FiltrationMaximize your engine's potential with the K&N ...Read More

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Sale price$117.59 Regular price$139.99
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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit

Universal Performance Air Filtration

Maximize your engine's potential with the K&N Universal Clamp-On Air Filter (RC-5178). Designed for custom intake systems and high-performance applications, this oval air filter provides the high-flow characteristics that K&N is world-famous for, ensuring your engine gets the air it needs to produce maximum power and torque.

Technical Specifications

  • Flange Diameter: 4 inches
  • Shape: Oval
  • Top Dimensions: 9" x 5.375"
  • Bottom Dimensions: 10.25" x 7.188"
  • Height: 7.875 inches
  • Media: Washable, reusable oiled cotton gauze

The RC-5178 is built to last, featuring a sturdy rubber flange and high-quality steel mesh that protects the filter media. The multi-layered cotton gauze is designed to trap contaminants while allowing for superior airflow compared to standard paper filters. Because it is washable and reusable, you can simply clean and re-oil it whenever necessary, making it a smart, long-term investment for any performance build. This universal filter is perfect for custom cold air intakes, turbo setups, or any application requiring a high-capacity 4-inch flange connection. Its oval shape is ideal for tight engine bays where space is at a premium, allowing you to maximize surface area for better filtration. Whether you are building a street machine or a track-focused beast, K&N delivers the reliability and performance you demand. Upgrade your intake system today with the best in the industry at GGCRACING.

Product Details

Product Description
Part Numbers
Sizing & Fit

Universal Performance Air Filtration

Maximize your engine's potential with the K&N Universal Clamp-On Air Filter (RC-5178). Designed for custom intake systems and high-performance applications, this oval air filter provides the high-flow characteristics that K&N is world-famous for, ensuring your engine gets the air it needs to produce maximum power and torque.

Technical Specifications

  • Flange Diameter: 4 inches
  • Shape: Oval
  • Top Dimensions: 9" x 5.375"
  • Bottom Dimensions: 10.25" x 7.188"
  • Height: 7.875 inches
  • Media: Washable, reusable oiled cotton gauze

The RC-5178 is built to last, featuring a sturdy rubber flange and high-quality steel mesh that protects the filter media. The multi-layered cotton gauze is designed to trap contaminants while allowing for superior airflow compared to standard paper filters. Because it is washable and reusable, you can simply clean and re-oil it whenever necessary, making it a smart, long-term investment for any performance build. This universal filter is perfect for custom cold air intakes, turbo setups, or any application requiring a high-capacity 4-inch flange connection. Its oval shape is ideal for tight engine bays where space is at a premium, allowing you to maximize surface area for better filtration. Whether you are building a street machine or a track-focused beast, K&N delivers the reliability and performance you demand. Upgrade your intake system today with the best in the industry at GGCRACING.

Product Details

Product Description

Universal Performance Air Filtration

Maximize your engine's potential with the K&N Universal Clamp-On Air Filter (RC-5178). Designed for custom intake systems and high-performance applications, this oval air filter provides the high-flow characteristics that K&N is world-famous for, ensuring your engine gets the air it needs to produce maximum power and torque.

Technical Specifications

  • Flange Diameter: 4 inches
  • Shape: Oval
  • Top Dimensions: 9" x 5.375"
  • Bottom Dimensions: 10.25" x 7.188"
  • Height: 7.875 inches
  • Media: Washable, reusable oiled cotton gauze

The RC-5178 is built to last, featuring a sturdy rubber flange and high-quality steel mesh that protects the filter media. The multi-layered cotton gauze is designed to trap contaminants while allowing for superior airflow compared to standard paper filters. Because it is washable and reusable, you can simply clean and re-oil it whenever necessary, making it a smart, long-term investment for any performance build. This universal filter is perfect for custom cold air intakes, turbo setups, or any application requiring a high-capacity 4-inch flange connection. Its oval shape is ideal for tight engine bays where space is at a premium, allowing you to maximize surface area for better filtration. Whether you are building a street machine or a track-focused beast, K&N delivers the reliability and performance you demand. Upgrade your intake system today with the best in the industry at GGCRACING.

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