Billet head for the 1991-1995 550SX aluminum reed cylinder engine. Head design is all orings and does not use a head gasket. The head is designed to be installed with the water outlets on the intake side and has 3 water outlets available. Head shell includes orings and brass water fittings and plugs. This head uses the stock studs and nuts. Does NOT include domes, you will need to order domes below under Related Products.
This does NOT fit the 550 cast iron piston port cylinders.