K&N HD-1388 High-Flow Replacement Air Filter — Fits 1988-2003 Harley Davidson Sportster

SKU: KNNHD-1388
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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.

K&N HD-1388 High-Flow Replacement Air Filter for Harley Davidson Sportster

Unleash the full potential of your 1988-2003 Harley Davidson Sportster with the K&N HD-1388 high-flow replacement air filter. Designed as a direct fit for your stock airbox, this performance filter significantly improves airflow to your engine, resulting in noticeable gains in horsepower and torque. K&N's advanced filtration technology ensures your engine receives clean, unrestricted air, optimizing combustion and overall performance.

Durable, Washable, and Reusable Design

The K&N HD-1388 air filter is built to last, featuring a durable, pleated cotton gauze media that is both washable and reusable. This means you'll save money on disposable filters while providing superior engine protection. Installation is straightforward, requiring no modifications to your motorcycle. Simply remove your old filter and drop in the K&N for an instant upgrade in performance and efficiency.

  • Increased horsepower and torque
  • Excellent engine protection
  • Washable and reusable filter media
  • Designed for 1988-2003 Harley Davidson Sportster models
  • Easy, direct-fit replacement
  • Emissions legal in all 50 states

Elevate your riding experience with the K&N HD-1388 air filter, available now at GGCRACING, your trusted source for motorcycle performance parts.

Vehicle Fitment

Years Make Model Trim
1996-2003 Harley-Davidson XL1200C Sportster 1200 Custom Base
1996-2003 Harley-Davidson XL1200S Sportster 1200 Sport Base
2002-2003 Harley-Davidson XL883C Sportster 883 Custom Base
2002-2003 Harley-Davidson XL883R Sportster 883 Roadster Base
1988-2003 Harley-Davidson XLH883 Base
1988-1996 Harley-Davidson XLH883DLX Sportster 883 Deluxe Base
1988-2003 Harley-Davidson XLH883HUG Sportster 883 Hugger Base

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.

K&N HD-1388 High-Flow Replacement Air Filter for Harley Davidson Sportster

Unleash the full potential of your 1988-2003 Harley Davidson Sportster with the K&N HD-1388 high-flow replacement air filter. Designed as a direct fit for your stock airbox, this performance filter significantly improves airflow to your engine, resulting in noticeable gains in horsepower and torque. K&N's advanced filtration technology ensures your engine receives clean, unrestricted air, optimizing combustion and overall performance.

Durable, Washable, and Reusable Design

The K&N HD-1388 air filter is built to last, featuring a durable, pleated cotton gauze media that is both washable and reusable. This means you'll save money on disposable filters while providing superior engine protection. Installation is straightforward, requiring no modifications to your motorcycle. Simply remove your old filter and drop in the K&N for an instant upgrade in performance and efficiency.

  • Increased horsepower and torque
  • Excellent engine protection
  • Washable and reusable filter media
  • Designed for 1988-2003 Harley Davidson Sportster models
  • Easy, direct-fit replacement
  • Emissions legal in all 50 states

Elevate your riding experience with the K&N HD-1388 air filter, available now at GGCRACING, your trusted source for motorcycle performance parts.

Vehicle Fitment

Years Make Model Trim
1996-2003 Harley-Davidson XL1200C Sportster 1200 Custom Base
1996-2003 Harley-Davidson XL1200S Sportster 1200 Sport Base
2002-2003 Harley-Davidson XL883C Sportster 883 Custom Base
2002-2003 Harley-Davidson XL883R Sportster 883 Roadster Base
1988-2003 Harley-Davidson XLH883 Base
1988-1996 Harley-Davidson XLH883DLX Sportster 883 Deluxe Base
1988-2003 Harley-Davidson XLH883HUG Sportster 883 Hugger Base

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.

K&N HD-1388 High-Flow Replacement Air Filter for Harley Davidson Sportster

Unleash the full potential of your 1988-2003 Harley Davidson Sportster with the K&N HD-1388 high-flow replacement air filter. Designed as a direct fit for your stock airbox, this performance filter significantly improves airflow to your engine, resulting in noticeable gains in horsepower and torque. K&N's advanced filtration technology ensures your engine receives clean, unrestricted air, optimizing combustion and overall performance.

Durable, Washable, and Reusable Design

The K&N HD-1388 air filter is built to last, featuring a durable, pleated cotton gauze media that is both washable and reusable. This means you'll save money on disposable filters while providing superior engine protection. Installation is straightforward, requiring no modifications to your motorcycle. Simply remove your old filter and drop in the K&N for an instant upgrade in performance and efficiency.

  • Increased horsepower and torque
  • Excellent engine protection
  • Washable and reusable filter media
  • Designed for 1988-2003 Harley Davidson Sportster models
  • Easy, direct-fit replacement
  • Emissions legal in all 50 states

Elevate your riding experience with the K&N HD-1388 air filter, available now at GGCRACING, your trusted source for motorcycle performance parts.

Vehicle Fitment

Years Make Model Trim
1996-2003 Harley-Davidson XL1200C Sportster 1200 Custom Base
1996-2003 Harley-Davidson XL1200S Sportster 1200 Sport Base
2002-2003 Harley-Davidson XL883C Sportster 883 Custom Base
2002-2003 Harley-Davidson XL883R Sportster 883 Roadster Base
1988-2003 Harley-Davidson XLH883 Base
1988-1996 Harley-Davidson XLH883DLX Sportster 883 Deluxe Base
1988-2003 Harley-Davidson XLH883HUG Sportster 883 Hugger Base

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