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Radium Engineering ACV block-off plate for the Mazda 13B-REW intake manifold is intended to seal the EGR/ACV location when using Radium’s fuel rail 20-0447. Marketed for off-highway use only, the block-off provides a necessary seal for modified intake and fuel system setups that remove the factory ACV, enabling compatibility with Radium’s aftermarket fuel components.
Radium Engineering Mazda 13B-REW ACV Block Off
