K&N Engineering

K&N RU-4250 Universal Air Filter — 3.75in Flange ID, 5.375in Base OD, 4.375in Top OD, 5in Height

K&N RU-4250 Universal Air Filter — 3.75in Flange ID, 5.375in Base OD, 4.375in Top OD, 5in Height
K&N RU-4250 Universal Air Filter — 3.75in Flange ID, 5.375in Base OD, 4.375in Top OD, 5in Height
K&N RU-4250 Universal Air Filter — 3.75in Flange ID, 5.375in Base OD, 4.375in Top OD, 5in Height
K&N RU-4250 Universal Air Filter — 3.75in Flange ID, 5.375in Base OD, 4.375in Top OD, 5in Height
K&N RU-4250 Universal Air Filter — 3.75in Flange ID, 5.375in Base OD, 4.375in Top OD, 5in Height
K&N RU-4250 Universal Air Filter — 3.75in Flange ID, 5.375in Base OD, 4.375in Top OD, 5in Height
K&N RU-4250 Universal Air Filter — 3.75in Flange ID, 5.375in Base OD, 4.375in Top OD, 5in Height
K&N RU-4250 Universal Air Filter — 3.75in Flange ID, 5.375in Base OD, 4.375in Top OD, 5in Height
K&N RU-4250 Universal Air Filter — 3.75in Flange ID, 5.375in Base OD, 4.375in Top OD, 5in Height
K&N RU-4250 Universal Air Filter — 3.75in Flange ID, 5.375in Base OD, 4.375in Top OD, 5in Height
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K&N RU-4250 Universal Air Filter — 3.75in Flange ID, 5.375in Base OD, 4.375in Top OD, 5in HeightK&N RU-4250 Universal Air Filter — 3.75in Flange ID, 5.375in Base OD, 4.375in Top OD, 5in HeightK&N RU-4250 Universal Air Filter — 3.75in Flange ID, 5.375in Base OD, 4.375in Top OD, 5in HeightK&N RU-4250 Universal Air Filter — 3.75in Flange ID, 5.375in Base OD, 4.375in Top OD, 5in HeightK&N RU-4250 Universal Air Filter — 3.75in Flange ID, 5.375in Base OD, 4.375in Top OD, 5in HeightK&N RU-4250 Universal Air Filter — 3.75in Flange ID, 5.375in Base OD, 4.375in Top OD, 5in HeightK&N RU-4250 Universal Air Filter — 3.75in Flange ID, 5.375in Base OD, 4.375in Top OD, 5in HeightK&N RU-4250 Universal Air Filter — 3.75in Flange ID, 5.375in Base OD, 4.375in Top OD, 5in HeightK&N RU-4250 Universal Air Filter — 3.75in Flange ID, 5.375in Base OD, 4.375in Top OD, 5in HeightK&N RU-4250 Universal Air Filter — 3.75in Flange ID, 5.375in Base OD, 4.375in Top OD, 5in Height
K&N Engineering

K&N RU-4250 Universal Air Filter — 3.75in Flange ID, 5.375in Base OD, 4.375in Top OD, 5in Height

SKU: KNNRU-4250
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Price:
$89.99
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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
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Product Details

Product Description
Part Numbers
Sizing & Fit

About K&N Engineering

K&N has been the world's leader in washable, reusable performance air filters since 1969. From the legendary cone filter to complete cold-air intake systems, K&N's cotton-gauze element delivers more airflow than paper while staying serviceable for the life of the vehicle.

Watch in action

K&N RU-4250 Universal Air Filter: Performance and Versatility

Enhance your vehicle's performance with the K&N RU-4250 Universal Air Filter. Engineered for a wide array of applications, this filter is ideal for racing vehicles, generators, snowmobiles, tractors, and more. Its versatile design ensures compatibility regardless of your air intake's angle or offset diameter.

Key Features:

  • Durable Construction: Features an ultra-strong molded pliable rubber flange that absorbs vibration and ensures a secure attachment.
  • Flexible Fitment: The flange can be stretched up to 1/16 of an inch (1.5mm) to accommodate slightly varied sizes, ensuring a snug fit.
  • Optimized Dimensions: With a 3.75-inch flange ID, 5.375-inch base OD, 4.375-inch top OD, and a 5-inch height, this filter is designed for efficient airflow.
  • Washable and Reusable: Unlike disposable filters, the RU-4250 is washable and reusable, offering long-term value and environmental benefits.
  • Performance Boost: A clean and efficient air filter helps your engine breathe better, leading to improved horsepower and acceleration.

The K&N RU-4250 is more than just an air filter; it's an investment in your engine's longevity and performance. Its robust design and washable nature make it a cost-effective and reliable choice for enthusiasts seeking top-tier air filtration. Experience the K&N difference with this high-quality universal air filter, available at GGCRACING.

Product Details

Product Description
Part Numbers
Sizing & Fit

About K&N Engineering

K&N has been the world's leader in washable, reusable performance air filters since 1969. From the legendary cone filter to complete cold-air intake systems, K&N's cotton-gauze element delivers more airflow than paper while staying serviceable for the life of the vehicle.

Watch in action

K&N RU-4250 Universal Air Filter: Performance and Versatility

Enhance your vehicle's performance with the K&N RU-4250 Universal Air Filter. Engineered for a wide array of applications, this filter is ideal for racing vehicles, generators, snowmobiles, tractors, and more. Its versatile design ensures compatibility regardless of your air intake's angle or offset diameter.

Key Features:

  • Durable Construction: Features an ultra-strong molded pliable rubber flange that absorbs vibration and ensures a secure attachment.
  • Flexible Fitment: The flange can be stretched up to 1/16 of an inch (1.5mm) to accommodate slightly varied sizes, ensuring a snug fit.
  • Optimized Dimensions: With a 3.75-inch flange ID, 5.375-inch base OD, 4.375-inch top OD, and a 5-inch height, this filter is designed for efficient airflow.
  • Washable and Reusable: Unlike disposable filters, the RU-4250 is washable and reusable, offering long-term value and environmental benefits.
  • Performance Boost: A clean and efficient air filter helps your engine breathe better, leading to improved horsepower and acceleration.

The K&N RU-4250 is more than just an air filter; it's an investment in your engine's longevity and performance. Its robust design and washable nature make it a cost-effective and reliable choice for enthusiasts seeking top-tier air filtration. Experience the K&N difference with this high-quality universal air filter, available at GGCRACING.

Product Details

Product Description

About K&N Engineering

K&N has been the world's leader in washable, reusable performance air filters since 1969. From the legendary cone filter to complete cold-air intake systems, K&N's cotton-gauze element delivers more airflow than paper while staying serviceable for the life of the vehicle.

Watch in action

K&N RU-4250 Universal Air Filter: Performance and Versatility

Enhance your vehicle's performance with the K&N RU-4250 Universal Air Filter. Engineered for a wide array of applications, this filter is ideal for racing vehicles, generators, snowmobiles, tractors, and more. Its versatile design ensures compatibility regardless of your air intake's angle or offset diameter.

Key Features:

  • Durable Construction: Features an ultra-strong molded pliable rubber flange that absorbs vibration and ensures a secure attachment.
  • Flexible Fitment: The flange can be stretched up to 1/16 of an inch (1.5mm) to accommodate slightly varied sizes, ensuring a snug fit.
  • Optimized Dimensions: With a 3.75-inch flange ID, 5.375-inch base OD, 4.375-inch top OD, and a 5-inch height, this filter is designed for efficient airflow.
  • Washable and Reusable: Unlike disposable filters, the RU-4250 is washable and reusable, offering long-term value and environmental benefits.
  • Performance Boost: A clean and efficient air filter helps your engine breathe better, leading to improved horsepower and acceleration.

The K&N RU-4250 is more than just an air filter; it's an investment in your engine's longevity and performance. Its robust design and washable nature make it a cost-effective and reliable choice for enthusiasts seeking top-tier air filtration. Experience the K&N difference with this high-quality universal air filter, available at GGCRACING.

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