Harley-Davidson Oil-Air Separation Air Filter Modification Kit

• Oil-air separator kit – reduces crankcase oil vapor
• Cleaner intake = better power & less maintenance
• Fits Sportster, Softail & Touring Harley models

This modification kit is specifically designed for Harley-Davidson motorcycles. It separates oil from air vapors coming from the crankcase, preventing this oil mist from contaminating the air filter and other intake components.

Main advantages

• Cleaner engine : less oil and carbon build-up means smoother running and longer life.
• Improved performance : a cleaner air filter flows more freely, boosting throttle response and power.
• Reduced maintenance : fewer filter clean-outs and lower service costs.

How it works

The unit mounts to the crankcase breather line. Oil vapors condense inside the separator and return to the crankcase; only clean air continues to the intake, keeping filters and throttle bodies spotless.

To complete the kit like on the first and second photo you need an oil catch can: https://remmotorcycle.co/products/harley-v-twin-oil-catch-can

Compatible models

Universal fit for most Harley-Davidson V-twins – Sportster, Softail and Touring families.

Installation

Professional installation recommended for best routing and sealing.

Availability

Available within 7–12 days.