Exhaust manifold, duplicate of original

Exhaust manifold, U.S.A. made, duplicate of original exhaust manifold. Helpful Hint: To check for a straight manifold, place a straight edge across the bottom edge of the 4 manifold holes. They should all be in alignment. If your manifold is warped (bent), the hole closest to the exhaust pack nut will be lower than the rest.

NOTE: 1909-1912 used a slightly different style of manifold that looked similar to this from the outside. This manifold will work on the 1909-1912 engines but you will also have to use the 4037C exhaust pipe with it. 1927 originally used a Vaporizer manifold and carburetor, if your carburetor has been changed to a Holley NH 3060B is the correct manifold to be used with it.