The cast-aluminum Weber Intake Manifold is intended for use with a Weber 48 IDA or the Racing Beat-modified 51 IDA carburetor on a 1974-85 13B 4 Port engine. (Although a 1984-85 13B 4-Port engine was never actually produced by Mazda, this engine configuration can be assembled using available parts.)
The manifold comes supplied with four (4) base gaskets, two (2) phenolic spacers, and all mounting hardware.
These optional items are available separately if needed:
Accelerator Cable Bell Crank
74-75 Manifold to Engine Gasket
76-78 Manifold to Engine Gasket 84-85 Manifold to Engine Gasket
Intake Water O-Ring Gaskets
The manifold is designed with three vacuum source fittings. Two fittings on the intake runners are plugged with a metric pipe fitting, and can be easily tapped to American pipe sizes to accept various common fittings. If needed, an additional fitting (10mm X 1.25) can be used for power brakes.