MCSO-ring intake manifold conversion kit 512840 fits 40-48 74" Knucklehead; 48-54 74" Panhead (NU) Steel screw-in. Used to upgrade 40-54 plumber style intake of 1200cc Knuckle & Pans to the more reliable seal of the 55-65 style O-ring system. Δείτε περισσότερα στον κατάλογο V-Twin Home > Parts > Intake > O-ring intake manifold conversion kit