One New Replacement Intake/Outlet Manifold (with Gaskets) for Ford Farm Tractor Models: NAA, 600, 800, 2000, 4000 Series 4 Cyl. Gas Tractors. THIS MANIFOLD HAS CARBURETOR MOUNTING HOLES CUT OUT TO ACCOMMODATE BOTH LARGE AND SMALL CARBURETOR OPTIONS. Manifold may be painted or unpainted. Please call for more details. The outlet on this manifold is 2 1/4″ in diameter. The flange bolt holes are 3 1/4″ center to center. ACTUAL PHOTOS. Replaces Part Numbers: B9NN9425A-GSKTS (Which Contains B9NN9425A Manifold Plus C0NN9448C Gasket Kit) or TFM9425WG, 312556, EAE9425C Models This part fits: 1801, 1811, 1821, 1841, 1871, 2000, 2110, 2120, 4000, 600, 601, 611, 621, 631, 700, 800, 801, 811, 820, 821, 900, 901, JUBILEE, NAA Reference Numbers: 1109-9911, 312556, B9NN9425A, B9NN9425A-A, B9NN9425A-GSKTS, C0NN9448C, C0NN9448C-A, EAE9425C, NAA55232A, NAA55232A-A, TFM9425WG, TFM9425WG-A