K&N Universal Oval Straight Air Filter — 3.688in Flange ID — Fits Ford Excursion/F-250/F-350 2003-2007

SKU: KNNRC-5178

About K&N Engineering K&N has been the world's leader in ...Read more

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Sale price$146.99
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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

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

Enhance Performance with K&N Universal Oval Straight Air Filter

Upgrade your vehicle's air intake system with the K&N Universal Oval Straight Air Filter, meticulously engineered for superior airflow and filtration. This high-performance air filter is designed to fit a wide range of applications, including specific Ford Excursion and F-Series Super Duty models from 2003-2007. Its robust construction and innovative design ensure maximum engine protection while boosting horsepower and torque.

Superior Filtration and Reusability

K&N's renowned universal air filters are crafted for durability and longevity. Featuring a washable and reusable design, this filter provides excellent value and reduces waste compared to disposable filters. The rigid flange ensures a secure, clamp-on hose connection, making installation straightforward. Whether for a daily driver or a performance build, the RC-5178 offers a significant upgrade in air filtration efficiency and engine response.

  • Flange ID: 3.688 inches
  • Base Outer Length: 10.25 inches
  • Height: 7.875 inches
  • Shape: Oval Straight
  • Compatibility: Universal fit, with specific applications for 2003-2005 Ford Excursion (Eddie Bauer, Limited, XLS, XLT) and 2003-2007 Ford F-250/F-350 Super Duty (Harley-Davidson, King Ranch, Lariat, XL, XLT)
  • Features: Washable, reusable, high-flow design

Experience the K&N difference with the RC-5178 Universal Air Filter. Find the best selection of air filters and performance parts at GGCRACING.

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

Enhance Performance with K&N Universal Oval Straight Air Filter

Upgrade your vehicle's air intake system with the K&N Universal Oval Straight Air Filter, meticulously engineered for superior airflow and filtration. This high-performance air filter is designed to fit a wide range of applications, including specific Ford Excursion and F-Series Super Duty models from 2003-2007. Its robust construction and innovative design ensure maximum engine protection while boosting horsepower and torque.

Superior Filtration and Reusability

K&N's renowned universal air filters are crafted for durability and longevity. Featuring a washable and reusable design, this filter provides excellent value and reduces waste compared to disposable filters. The rigid flange ensures a secure, clamp-on hose connection, making installation straightforward. Whether for a daily driver or a performance build, the RC-5178 offers a significant upgrade in air filtration efficiency and engine response.

  • Flange ID: 3.688 inches
  • Base Outer Length: 10.25 inches
  • Height: 7.875 inches
  • Shape: Oval Straight
  • Compatibility: Universal fit, with specific applications for 2003-2005 Ford Excursion (Eddie Bauer, Limited, XLS, XLT) and 2003-2007 Ford F-250/F-350 Super Duty (Harley-Davidson, King Ranch, Lariat, XL, XLT)
  • Features: Washable, reusable, high-flow design

Experience the K&N difference with the RC-5178 Universal Air Filter. Find the best selection of air filters and performance parts at GGCRACING.

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