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The K&N Cold Air Intake System (57-1139) is a precision-engineered upgrade for 2017-2021 Harley Davidson models, delivering a guaranteed boost in horsepower and torque through a high-flow, reusable cotton air filter and custom heat shield. Dyno-tested for verified performance, it enhances throttle response, engine sound, and towing capability while maintaining factory warranty protection. Proudly made in the USA, this system installs easily in under an hour and is backed by a no-hassle lifetime limited warranty.
| ASIN | B07N8TMQ2Q |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | #745,312 in Automotive ( See Top 100 in Automotive ) #735 in Automotive Replacement Air Intake Filters |
| Brand Name | K&N |
| Customer Reviews | 4.5 4.5 out of 5 stars (104) |
| Fit Type | Vehicle Specific Fit |
| Global Trade Identification Number | 00024844368973 |
| Included Components | Air Filter^Intake Tube^Gasket^Back Plate^Parts Kit^Literature Packet |
| Item Type Name | Performance Air Intake System |
| Item Weight | 4.2 Pounds |
| Manufacturer | K&N Engineering |
| Manufacturer Part Number | 57-1139 |
| Manufacturer Warranty Description | 1,000,000 Miles/10 Year |
| Model Number | 57-1139 |
| OEM Equivalent Part Number | 57-1139 |
| Product Grade | Performance Part |
| Shape | Oblong |
| UPC | 024844368973 |
| Unit Count | 1.0 Count |
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