NU-3423 Uni-Filter Foam Air Filter for Harley Davidson FXST/FLST/FLT/FXR (1986–1988)

Direct-fit foam air filter designed to replace the OEM unit on Harley Davidson FXST, FLST, FLT, and FXR models from 1986 through 1988, delivering enhanced airflow and dirt filtration to improve engine response and power output.

• Fitment: Harley Davidson FXST, FLST, FLT, and FXR models (1986–1988)
• Material: premium foam for superior dirt stopping and airflow
• Installation: direct replacement that matches the existing air filter housing for easy setup
• Origin: Made in the USA
• OEM Cross Reference: 29259-86
• Part number: NU-3423

Maintenance: Regular maintenance with Uni Filter Air Filter Oil (sold separately) will keep the filter performing at its best, extending its lifespan and ensuring your motorcycle runs smoothly for miles to come. For detailed cleaning instructions, please refer to the provided PDF link.

Designed for riders who want durability and consistent performance from their Harley Davidson air intake, this foam filter pairs reliable filtration with ample airflow to support improved engine response on 1986–1988 touring and V-twin models.

Uni Filter foam air filter is a direct replacement filter and is designed to fit perfectly. Filter provides unsurpassed airflow dirt stopping and overall performance.

The Uni-Filter Foam Air Filter NU-3423 is a high-performance replacement designed specifically for Harley Davidson motorcycles including FXST, FLST, FLT, and FXR models from 1986 to 1988. Crafted in the USA, this filter offers exceptional airflow and dirt filtration to enhance your bike's overall performance. Its direct-fit design ensures a perfect match with your existing air filter housing, making installation straightforward and hassle-free. Constructed from premium foam, the filter is engineered to maximize filtration efficiency while maintaining superior airflow, resulting in improved engine response and power output. Regular maintenance with the recommended Uni Filter Air Filter Oil (sold separately) will keep the filter performing at its best, extending its lifespan and ensuring your motorcycle runs smoothly for miles to come. For detailed cleaning instructions, please refer to the provided PDF link. This foam filter is an essential upgrade for riders seeking durability and optimal engine performance in their Harley Davidson motorcycle. The product's lightweight construction and precise engineering make it a reliable choice for motorcycle enthusiasts who demand quality and reliability from their accessories.

Features:

• Designed for Harley Davidson FXST, FLST, FLT, and FXR models from 1986-1988

• Constructed from durable foam for superior dirt stopping and airflow

• Direct replacement filter for easy installation

• Made in the USA with high-quality materials

• OEM Cross Reference: 29259-86

Fitment
Harley Davidson FLST 1986
Harley Davidson FLST 1987
Harley Davidson FLST 1988
Harley Davidson FLT 1986
Harley Davidson FLT 1987
Harley Davidson FLT 1988
Harley Davidson FXR 1986
Harley Davidson FXR 1987
Harley Davidson FXR 1988
Harley Davidson FXST 1986
Harley Davidson FXST 1987
Harley Davidson FXST 1988