K&N High Flow Air Filter HD-1388 Replacement - Harley-Davidson Sportster
About K&N
K&N pioneered the washable, reusable cotton-gauze air filter and has been building intake products since 1969. On a V-twin, an intake swap is usually step one of the classic uncork — filter, exhaust, then tune.
Maximize the airflow to your Harley-Davidson Sportster with the K&N HD-1388 High Flow Air Filter. Engineered to be a direct replacement for your OEM filter, this upgrade delivers a noticeable increase in engine breathing, translating to improved power and a more responsive ride.
Why riders pick this
- Increased airflow for enhanced engine performance
- Multi-layer cotton gauze media for effective filtration
- Washable and reusable for extended product life
- Direct fit into OEM airbox for easy installation
- Pre-oiled and ready to ride
- Designed for long service intervals
The K&N HD-1388 features a multi-layer woven cotton gauze media, expertly pleated to create a vast filtration surface area. This design not only allows for significantly more air to enter your V-twin engine but also ensures superior filtration, protecting vital internal components. It's the ideal choice for riders looking for a performance boost without complicated modifications.
Optimized Airflow and Enduring Quality
- Multi-layer woven cotton gauze media provides excellent filtration and increased airflow
- Pleated design maximizes surface area for extended service intervals
- Application-specific sealing bead ensures a precise and secure fit in the OEM airbox
- Washable and reusable construction offers long-term durability and value
- Pre-oiled and ready for immediate, hassle-free installation
Simple Path to Better Performance
Installing the K&N HD-1388 High Flow Air Filter is a straightforward process that typically doesn't require any fuel management adjustments. This filter is designed to integrate seamlessly with your motorcycle's stock setup, making it an accessible performance upgrade. Its reusable nature means you can simply clean and re-oil it, ensuring consistent performance and value for the life of your bike.
Specifications
- Brand: K&N
- Manufacturer Part #: HD-1388
- UPC: 024844023360
- Length: 5.62 in
- Width: 4.62 in
- Height: 9.25 in
- Weight: 1.15 lbs
Common questions
Will my Sportster need a fuel tuner after installing this filter?
No, this K&N High Flow Air Filter is designed to work with your existing fuel delivery system, and fuel management modifications are not typically required.
Can I wash and reuse this K&N air filter?
Yes, the cotton gauze element of the K&N HD-1388 is fully washable and reusable. Regular cleaning and re-oiling will maintain its performance.
What Harley-Davidson Sportster models does this filter fit?
This filter fits various Sportster models from 1988-2003, including Sportster 1200, Sportster 883, and Sportster 883 Hugger. Always verify fitment for your specific year and model before ordering.
Ordering from Vtwinbikers
- Brand new, sourced through authorized US distribution — never used, never grey-market.
- Not sure it fits? Use Shop by Bike to filter by your year and model, or email us and we will confirm before you order.
- Harley-Davidson and Indian Motorcycle is all we do, so you are talking to people who ride what you ride.
| BRAND | K&N |
| TYPE | Air Filters |
| SKU | 721388 |
| WEIGHT | 1.15 lb |
