K&N HD-1718 Replacement Air Filter for 18-26 Harley-Davidson Softail M8

Vehicle Fitment

• 2018-2019 Harley-Davidson Softail Breakout (FXBR)
• 2018-2020 Harley-Davidson Softail Deluxe (FLDE)
• 2018-2019 Harley-Davidson Softail Fat Bob (FXFB)
• 2018-2019 Harley-Davidson Softail Fat Boy (FLFB)
• 2018-2026 Harley-Davidson Softail Heritage Classic (FLHC)
• 2020-2024 Harley-Davidson Softail Heritage Classic 114 (FLHCS)
• 2018-2020 Harley-Davidson Softail Low Rider (FXLR)
• 2018-2021 Harley-Davidson Softail Slim (FLSL)
• 2018-2021 Harley-Davidson Softail Sport Glide (FLSB)
• 2020-2021 Harley-Davidson Softail Standard (FXST)
• 2018-2020, 2025-2026 Harley-Davidson Softail Street Bob (FXBB)
• 2021-2024 Harley-Davidson Softail Street Bob 114 (FXBBS)

Fitment Notes

• Milwaukee-Eight Softail models with stock air cleaner
• Does NOT fit Touring models (use HD-1717)
• Drops into factory air box -- no modifications
• Pre-oiled and ready to install
• Washable and reusable for the life of the motorcycle

Features

• K&N high-flow replacement air filter
• Oiled cotton gauze filter media
• 4-6 layers of woven cotton between aluminum wire mesh
• Increased airflow over stock paper filter
• Improved horsepower and throttle response
• Washable and reusable -- no disposable filters
• Installs in minutes

Specifications

• Part Number: HD-1718
• Brand: K&N
• Type: Replacement air filter
• Application: Motorcycle (Harley-Davidson Softail)
• Engine: Milwaukee-Eight 107/114
• Filter Shape: Unique (application-specific)
• Filter Material: Oiled cotton gauze
• Filter Color: Red
• Pre-Oiled: Yes
• Washable/Reusable: Yes
• Warranty: 10-year / million-mile limited

Included Components

• 1x K&N HD-1718 replacement air filter (pre-oiled)

Product Description

The K&N HD-1718 is a high-flow replacement air filter for 2018-2026 Harley-Davidson Softail models equipped with the Milwaukee-Eight 107 or 114 engine and stock air cleaner assembly. This drop-in filter replaces the restrictive factory paper element with K&N's proven oiled cotton gauze media -- four to six layers of woven cotton between two sheets of aluminum wire mesh -- to increase airflow and improve horsepower, torque, and throttle response while maintaining excellent engine protection.

Pre-oiled and ready to install right out of the box, the HD-1718 drops into the factory air box in minutes with no tools or modifications required. Unlike disposable paper filters that must be replaced regularly, this K&N filter is washable and reusable for the life of the motorcycle, saving approximately $250 over 10 years in replacement filter costs. Fits Softail Heritage Classic, Street Bob, Sport Glide, Slim, Fat Boy, Fat Bob, Breakout, Deluxe, Low Rider, and Standard models. Does not fit Touring models -- use HD-1717 for Touring applications. Backed by K&N's 10-year / million-mile limited warranty.