S&S Cycle SS900-1186 Rocker Box/Cylinder Head Breathers for Harley-Davidson Touring 17-24/Softail 18-24The crew here at S&S Cycle have been working on our new Billet Head Breathers, crafted from premium 6061 aluminum and anodized in the iconic S&S Blue. Our new breathers feature a dual O ring design, ensuring a superior seal in the head, minimizing leaks, and maximizing performance. We also developed a unique Labyrinth design to significantly reduce oil pass through, keeping your engine running cleaner and smoother. FEATURES & BENEFITS 6061 Aluminum to