27009-86B Genuine Zodiac Manifold Flanges

These Genuine Zodiac manifold flanges are a high-quality replacement for OEM 27009-86B. They are designed to fit 1990–2006 Sportsters, 1986–2000 Evolution Big Twins, and 1999–2006 Twin Cams, excluding 2006 fuel-injected models. The kit includes two socket head screws and the necessary O-rings for a secure, leak-free installation on stock or stock-style manifolds. If you are running an S&S manifold, be sure to use the thinner S&S-specific O-rings to avoid damage, as the stock-style rings included here are sized for standard port diameters. These flanges are essential for preventing intake leaks, which can cause lean conditions and poor engine performance. They provide a sturdy, reliable connection between your carb and the cylinder heads.